Square inches is a two dimensional measurement of area, whereas cubic inches is a three dimensional measurement of volume. Now double the radius to get the diameter (Example: 621.12 meters). Divide the area (in square units) by Pi (approximately 3.14159). Yards Re: conversion of a diameter to square feet. To calculate an area in square feet, you will need measurements for the width and length (for a square shape) or the diameter (for a circular area). If you know the diameter of the cylinder, you can find the radius by dividing the diameter by two. For example, let’s find the volume of a cylinder in cubic feet with a radius of 4′ and a height of 3′. A circular mil is the equivalent area of a circle whose diameter is 0.001 (10-3) inch, or approximately 0.7854 millionths of a square inch. Mils of circular wire or cable can be calculated as: mils = 1000 d (1) where. Radius: Diameter: Circumference: Area: For help with using this calculator, see the shape area help page.. Return to the Shape Area section Now double the radius to get the diameter (Example: 621.12 meters). Square Inches to Thousand Circular Mils (or just enter a value in the "to" field) Please share if you found this tool useful: Tweet. Label the answer. He recognized that the area of a hexagon inscribed inside a circle was a gross approximation of the area of the circle. Symbols. 1 circle 1-inch diameter ( ∅ 1 in ) = 0.79 square inches ( in 2 , sq in ). ø = Circle diameter; A = Circle area; π = Pi = 3.14159… Area of Circle. Feet d = diameter of cable or wire (inches) Example - Calculating Mil. Calculate the Size of Round Bar Needed to Fabricate Hexagon, Square or Flat Bars. Related Topics . If you want to know what is diameter of a wire with respect to the square mm size and the weigh as well, you can use below given tables to convert between wire square mm and diameter mm and to know the approximate weight of 100 meter length: Example: 303,000/3.14159 = 96447.98; Take the square root of the result (Example: 310.56). Square meters The diameter of a circle is known as the straight line segment which passes through the center of the circle. The other way around, how many square centimeters - cm2, sq cm are in one circle one inch diameter - ∅ 1in unit? Then subtract the pipe wall thickness in inches from your result to find the inside radius of the pipe opening. Fabricate Hexagon and Square Bar With the diameter of the hexagon or square bar, the size of the round bar can be calculated using the following formula: Round Bar Diameter = Hexagon Diameter * 1.154701 Round Bar Diameter = Square Diameter * 1.414214 A square inch is calculated as the area of a square that has 1 inch on each side. MCM -thousand circular mils). This tool will calculate the area of a circle from the diameter, and will convert different measurement units for diameter and area. Using that method, 50.8 millimeters would be the same as 2 inches because there are 25.4 millimeters in an inch. If you do not have access to the pipe' opening but you know the thickness of the pipe wall, wrap the measuring tape around the pipe to find the circumference in inches. The radius can be any measurement of length. Formula 6: diameter. Bookmark circular mil to square inch Conversion Calculator - you will probably need it in the future. Square Inches Calculator (Height in Inches x Length in Inches = Square Inches) (Square Inches = Sq In = Sq.In. Divide the area (in square units) by Pi (approximately 3.14159). This calculates the area as square units of the length used in the radius. The diamater will tell you the total wieght of water in the pool but not psi. How many circular mil in 1 square inch? For an example, The area in circular mils = (diameter in mils) ^ 2. Meters The area is measured in units such as square centimeters $(cm^2)$, square meters $(m^2)$, square kilometers $(km^2)$ etc. Directions: Enter inches into the calculator below. Diferent area surface units conversion from circle one inch diameter to square centimeters. Check the chart for more details. I think what you are asking is how to find the area of a circle (in m^2) with a known diameter. For quick reference purposes, below is a conversion table that you can use to convert from m 2 to in 2. You can use this square inches calculator to calculate siding square inches or any other square inches needed (like: roofing, carpet, etc.) For example: 200 square inches / 144 = 1.39. A circular mil is the equivalent area of a circle whose diameter is 0.001 (10-3) inch, or approximately 0.7854 millionths of a square inch. To learn how to convert millimeters to inches using fractions or centimeters, read more! If you are looking for the psi at the bottom of this pool, you do not need to know the diamater, you only need to know the height. Inches Related Topics . Formula. To determine the area of a circle from its diameter, divide the diameter by two, square it and multiply by π. Square nautical miles, Diameter units: Task: Convert 50 square meters to square inches (show work) Formula: m 2 ÷ 0.00064516 = in 2 Calculations: 50 m 2 ÷ 0.00064516 = 77,500.15500031 in 2 Result: 50 m 2 is equal to 77,500.15500031 in 2. Mils of circular wire or cable can be calculated as: mils = 1000 d (1) where. Electrical - Electrical units, amps and electrical wiring, wire gauge and AWG, electrical formulas and motors; Related Documents . Actually, you can use a diameter in inches and get an area in square feet. You are actually looking for cubic inches. Convert 1 ∅ 1in into square centimeter and ∅ one inch circles to cm2, sq cm. This tool will calculate the diameter of a circle from the area, and will convert different measurement units for area and diameter. Between ∅ 1in and cm2, sq cm measurements conversion chart page. The formula for calculating the area of a circle is: A = πr 2, where r is the radius of the circle. The diameter of a circle is the length of a straight line drawn between two points on a circle where the line also passes through the centre of a circle, or any two points on the circle as … d = diameter of cable or wire (inches) Example - Calculating Mil. Thanks you for the post. Could do it for you but it is better for you to go to the source site, where you will find a free unit converter program for downloading and a few on line sites that do any unit conversion. Millimeters Diameter of pipe is 0.0254 meter. Miles Divide the area (in square units) by Pi (approximately 3.14159). The diameter should be measured in feet (ft) for square footage calculations and if needed, converted to inches (in), yards (yd), centimetres (cm), millimetres (mm) and metres (m). It may be that the area you're looking to measure is a strange shape (such as a room or garden). How many square inches ( in 2 , sq in ) are in 1 circle 1-inch diameter ( 1 ∅ 1 in )? PSI is pounds/square inch, so really its square inches you want. Hectares The diameter … We couldn't find a conversion between diameter and inches Do a quick conversion: 1 diameter = 1 inches using the online calculator for metric conversions. This is the radius. You have probably noticed that, since diameter is twice the radius, the proportion between the circumference and the diameter is equal to π: C/D = 2πR / 2R = π. You can also use this tool to convert inches to feet and calculate square feet. To convert an area measured in square inches into square feet, divide the number of square inches by 144. Mils of a 1 inch … Mathematician Archimedes (287-212 B.C.E) was first to calculate the area of a circle. I assume you are talking about a circle, and want the area. How the COVID-19 Pandemic Will Change In-Person Retail Shopping in Lasting Ways, Tips and Tricks for Making Driveway Snow Removal Easier, Here’s How Online Games Like Prodigy Are Revolutionizing Education. Amps and Wire Gauge in 12V Electrical Circuits - Maximum current - amps - through a 12V circuit - related to size (AWG) and length of wire; AWG - American Wire Gauge and Circular Mils - AWG, diameter mil, circular mil, diameter in mm and area in mm 2 To convert an area measured in square inches into square feet, divide the number of square inches by 144. The formula for calculating the area of a circle is: A = πr2, where r is the radius of the circle. Square Centimeter to Square Inches Conversion Example Task: Convert 250 square centimeters to square inches (show work) Formula: cm 2 ÷ 6.4516 = in 2 Calculations: 250 cm 2 ÷ 6.4516 = 38.7500775 in 2 Result: 250 cm 2 is equal to 38.7500775 in 2. If you want to know what is diameter of a wire with respect to the square mm size and the weigh as well, you can use below given tables to convert between wire square mm and diameter mm and to know the approximate weight of 100 meter length: How Do You Convert Diameter to Square Inches? Here are the formulas for determining the area of a circle when you have either the radius or the diameter: PI * Radius^2 or PI/4 * Diameter^2 I'll do the first circle. This is the radius. Divide the outside diameter by two to find the outside radius. Multiply Pi (3.1416) with the square of the radius (r) 2. Square centimeters π is the symbol for pi (3.14159265). Convert the diameter to inches or to feet. In this example, the area is 314 square inches. To convert among square feet, square inches, square yards, square centimetres, square millimetres and square meters you can utilize the following conversion table. The area in cmm is defined as the square of the wire diameter in mm. 1 inch = 25.4 mm = (25.4/1000) meter = 0.0254( 1 meter = 1000 mm) Area of pipe have a square unit. Centimeters Multiply the square of the radius by 3.14 to get the area of the duct in square inches. To convert millimeters to inches, simply divide the millimeters by 25.4. Here are the formulas for determining the area of a circle when you have either the radius or the diameter: PI * Radius^2 or PI/4 * Diameter^2 I'll do the first circle. What Are the Steps of Presidential Impeachment? Area units: Strange Americana: Does Video Footage of Bigfoot Really Exist? Square inch to Inch Calculator Example: 177.8 mm * (0.0393700787 in / 1 mm) = 7 in The conversion of a given diameter to square feet uses a simple formula for determining the area of a circle. Reverse conversion? I think what you are asking is how to find the area of a circle (in m^2) with a known diameter. Circumference to diameter. A wire that is 1 mil (.001 inches) in diamter is defined to have an area of 1 circular mil. Diameter of Circle This is the diameter of a circle that corresponds to the specified area. Take the height of water and divide it by 2.31. Trying to convert a square cake into a round pan? radius = diameter ÷ 2. Formula. dvangossen wrote:convert 8 inch diameter into square inches convert 6 inch diameter into square inches. Our calculator can also convert the result to different units. Litz wire (stranded wire) consisting of many thin wires need a 14 % larger diameter compared to a solid wire. This online circumference to diameter converter helps you to find the diameter value from the given circumference at desired units. It is the EQUAL area value of 1 circle one inch diameter but in the square inches area unit alternative. The square inches unit number 0.79 sq in, in2 converts to 1 ∅ 1in, one circle one inch diameter. Take the square root of the result (Example: 310.56). The "unit" is usually millimeters but it can also be inches, feet, yards, meters (metres), or centimeters, when you take for the area the square of that measure. The area of a hexagon is calculated by breaking it into six equilateral triangles where the base of the triangle is the length of one side of the hexagon and the other two legs of the triangle are equal to the radius of the circle. Conversion Formula Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper. Do a quick conversion: 1 inches inches = 0.00694444444 square feet using the online calculator for metric conversions. Nautical miles. It is used in many areas, such as physics and mathematics. Area = 3.1416 x r 2. In one square foot, there are 144 square inches. Square Meters to Square Inches Conversion Chart . The result will appear in the box next to "square inch [in 2]". In this case, dividing it up into smaller parts and doing individual calculations is a good way to calculate the overall square footage. square millimetres.AnswerIt depends where you live.In Britain and Europe, the standard measurement is the square millimetre (mm2)In North America, circular-sectioned conductors are measured in circular mils (CM) or multiples (e.g. Finding the area of a pipe's opening in square inches can be useful in determining the flow capacity of the pipe. The form calculator requires JavaScript. Fabricate Hexagon and Square Bar With the diameter of the hexagon or square bar, the size of the round bar can be calculated using the following formula: Round Bar Diameter = Hexagon Diameter * 1.154701 Round Bar Diameter = Square Diameter * 1.414214 Conversion Table. Square feet dvangossen wrote:convert 8 inch diameter into square inches convert 6 inch diameter into square inches. The area of a cirlce is: Pi * radius * radius The radius is 1/2 the diameter: 15 foot / 2 = 7.5 foot Calcuate the area: 3.14 * 7.5 * 7.5 = 176.625 square foot Convert square feet to square inches: 176.625 square foot = 25,434 square inch rectangle examples and diagram. How to use circular mil to square inch Conversion Calculator Type the value in the box next to "circular mil". The conversion value for square inches to square feet is 144. You can also use this tool to convert inches to feet and calculate square feet. If you want to calculate the number of inches when you have the number of millimeters, you can do so by either multiplying the number of millimeters by 0.0393700787 inches or by dividing the number of millimeters by 25.4 millimeters. However, this unit is rarely used in practice. This gives you your square feet figure (ft 2). Kilometers The result you get, square it and them multiply it by 3.14 to find the area. Convert inches to feet, convert yards to feet, or convert meters to feet. 1 Thousand circular mils ≈ 5.067 074 790 97 x 10-7 cubic meters (SI base unit). To convert this to area in square inches, multiply 750,000 * pi / 4,000,000 = 0.589 sq in. Example: The area of a circle with a radius(r) of 3 inches is: Circle Area = 3.1416 x 3 2 Unit Descriptions; 1 Thousand Circular Mil: A thousand times the area of a circle with a diameter of one mil. The diameter given is 8", so: (3.1416/4) * 8 * 8 = 0.7854 * 64 = 50.27 square inches. Square kilometers 750,000 circular mils. Inches = 28 feet*12 inches/foot + 4 inches = 340 inches. Divide by the conversion value. Inside Circumference Conversion Table. we have an area of 303,000 square meters. Mils of a 1 inch … Abbreviated kcmil or MCM. The formula: Area of a Circle = π x (Diameter/2)^2 π = 3.142 Answer = (π x (Diameter/2)^2) square area Abbreviations of unit area: ft 2, in 2, yd 2, cm 2, mm 2, m 2 The answer is 1273239.5447352. Use this chart to determine how much batter you need for different sizes and shapes of baking pans. Square millimeters Conversion chart - ∅ one inch circles to square inches 1 circle one inch diameter to square inches = 0.79 sq in, in2 of warranties. So, the area equation is converted to look like this The constant is 0.005454. The conversion value for square inches to square feet is 144. For example: 200 square inches / 144 = 1.39. Step 6 Select an adapter that will convert between the round and the square duct sizes from your local building supply center; for example, our original 8-inch round duct should be mated to the 10-inch by 5-inch rectangular duct because they have the same cross-sectional area. You should also try our cubic feet calculator which will help calculate the cubic footage of other shapes. Acres Step 5 Divide the area from Step 4 by 144 to get the area in square feet. The formula used to calculate the circle diameter is: ø = 2 x √(A / π) Symbols. This on the web one-way conversion tool converts surface area units from ∅ 1-inch circles ( ∅ 1 in ) into square inches ( in 2 , sq in ) instantly online. Electrical - Electrical units, amps and electrical wiring, wire gauge and AWG, electrical formulas and motors; Related Documents . Unit Descriptions; 1 Square Inch: 1 in x 1 in: 1 Circular Inch: In SI units 1 circular inch is approximately 5.067075 x 10-4 square meters. This is also known as the longest chord of the circle. We assume you are converting between circular mil and square inch. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. To calculate the square footage when measurements are in inches or another unit of measure, first convert the length and width measurements to feet, then multiply them together. The diameter should be measured in feet (ft) for square footage calculations and if needed, converted to inches (in), yards (yd), centimetres (cm), millimetres (mm) and metres (m). All you have to do is enter the price per unit area and voila, you have the total cost of materials in a single click! By Staff Writer Last Updated Apr 15, 2020 10:37:38 PM ET. For quick reference purposes, below is a conversion table that you can use to convert from m 2 to in 2. Dividing the diameter by 2 will give you the radius. Now double the radius to get the diameter (Example: 621.12 meters). Convert these measurements to feet if they aren’t already. Then divide the circumference by 3.1415 to find the outside diameter. 900 Square Inches to Circular Inches = 1145.9156: 30 Square Inches to Circular Inches = 38.1972: 1,000 Square Inches to Circular Inches = 1273.2395: 40 Square Inches to Circular Inches = 50.9296: 10,000 Square Inches to Circular Inches = 12732.3954: 50 Square Inches to Circular Inches = 63.662: 100,000 Square Inches to Circular Inches = 127323.9545 Enter the diameter … To convert diameter to area , you will need to divide the diameter by two so as to get the radius. Task: Convert 50 square meters to square inches (show work) Formula: m 2 ÷ 0.00064516 = in 2 Calculations: 50 m 2 ÷ 0.00064516 = 77,500.15500031 in 2 Result: 50 m 2 is equal to 77,500.15500031 in 2. for calculating the diameter of a circle from its area. Please read our disclaimer Label the answer. Note: We first convert from kcmil to circular mil = =, = =, = = Thus, this wire would have a diameter of a half inch or 12.7 mm. This is the radius. The Area and perimeter of a circle work with steps shows the complete step-by-step calculation for finding the circumference and area of the circle with the radius length of $8\;in$ using the circumference and area formulas. Our calculator can also convert the result to different units. Square inches Please enter the dimensions you wish to convert. Inside Circumference. The formula: Area of a Circle = π x (Diameter/2)^2 π = 3.142 Answer = (π x (Diameter/2)^2) square area Abbreviations of unit area: ft 2, in 2, yd 2, cm 2, mm 2, m 2 Area of pipe = [ 3.14 *( Diameter)^2 ] / 4 meter^2 The following symbols are used to denote square inches: sq inches, sq inch, sq in; inches/-2, inch/-2, in/-2; inches^2, inch^2, in^2; inches², inch², in² Type the number of Square inch (in²) you want to convert in the text box, to see the results in the table. If JavaScript is not working Square miles Divide by the conversion value. Archimedes realized that as the number of sides on a polygon approaches infinity, the area is equal to the square of the radius of the circle times a constant, to which he assigned the Greek letter π. = inches 2 = in 2) Height inches X Length inches Directions: Use the calculator above to calculate your square inches. Before multiplying the length and width together, convert all measurements to feet. The constant is 0.005454. Conversion between square inch and inch. Re: conversion of a diameter to square feet. Find square feet just like you would find the area of a shape, by multiplying the length times the width. For example, if you found a duct that measured 10 inches by 5 inches, its area would also be 50 square inches. Convert millimeters to inches. A pipe's opening can be measured in square inches. Amps and Wire Gauge in 12V Electrical Circuits - Maximum current - amps - through a 12V circuit - related to size (AWG) and length of wire; AWG - American Wire Gauge and Circular Mils - AWG, diameter mil, circular mil, diameter in mm and area in mm 2 The following symbols are used to denote square inches: sq inches, sq inch, sq in; inches/-2, inch/-2, in/-2; inches^2, inch^2, in^2; inches², inch², in² Type the number of Square inch (in²) you want to convert in the text box, to see the results in the table. Square yards Circular Inches to Square Inches (or just enter a value in the "to" field) Please share if you found this tool useful: Tweet. To work out your cost of materials, simply multiply this figure by your 'price per square foot'. How Do You Convert Diameter to Square Inches. The formula used to calculate circle area is: A = π x (ø/ 2) 2. For quick reference purposes, below is a conversion table that you can use to convert from cm 2 to in 2. Area of the bottom in square inch = 3.1416*170*170 = 90,746 sq in Area of the bottom in ft2 (square feet) = 3.1416 * Homework Equations The Attempt at a Solution Inches equals 28 times 12 plus 4 = 340 Feet is 28 +1 divide by 12 times 4 … You can find metric conversion tables for SI units, as well as English units, currency, and other data. Metric equivalent. The formula for calculating the area of a circle is: π r 2 (with r being the radius of the circle, which is half the diameter). Some tables give conversions to circular millimetres (cmm). A = Circle area; π = Pi = 3.14159… ø = Circle diameter; Diameter of Circle. This proportion (circumference to diameter) is the definition of the constant pi. Conversion factors: To convert among square feet, square inches, square yards, square centimetres, square millimetres and square meters you can utilize the following conversion table. Feet=28.333 Radius = 170 inches or 14.167 feet. Calculate the Size of Round Bar Needed to Fabricate Hexagon, Square or Flat Bars. Conversion Table. You can view more details on each measurement unit: circular mil or square inch The SI derived unit for area is the square meter. area = Pi * radius 2 Enter either the radius or the diameter. 10 Must-Watch TED Talks That Have the Power to Change Your Life. Our calculator can also convert the result to different units. In one square foot, there are 144 square inches. on your browser, or in case you are simply curious, here is the procedure Divide the outside diameter by two to find the outside radius. Multiply the length in feet times the width in feet To estimate the cost of materials, multiply the total square footage by the price per square foot. It is calculated just by multiplying the diameter of the circle with π value. Example: 303,000/3.14159 = 96447.98; Take the square root of the result (Example: 310.56). Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more! To determine the area of a circle from its diameter, divide the diameter by two, square it and multiply by π. Reverse conversion? : a = circle diameter ; a = circle area ; π = *! D ( 1 ∅ 1in into square feet is 0.005454 ∅ one diameter! Purposes, below is a strange shape ( such as a room or garden ) or centimeters, read!. 1 ∅ 1 in ) = 0.79 square inches ( in m^2 ) with a diameter. Units for diameter and area circle area is 314 square inches area unit alternative how do you convert diameter to square inches and. For quick reference purposes, below is a conversion table that you can find metric conversion tables for units... All measurements to feet Example - calculating mil, so: ( )! To different units circle from the area of a Hexagon inscribed inside a circle from the area equation is to..., below is a two dimensional measurement of area, mass,,. For metric conversions √ ( a / π ) symbols mil and square inch to calculator. By your 'price per square foot, there are 25.4 millimeters in an.. Wire diameter in mm: ( 3.1416/4 ) * 8 * 8 = 0.7854 * 64 50.27... This tool will calculate the area in cmm is defined as the square root how do you convert diameter to square inches the pipe a three measurement...: a Thousand times the area of the duct in square inches area unit alternative = ( diameter in ). Length used in the box next to `` square inch [ in,... Inch is calculated as the longest chord of the circle calculating mil divide it 2.31! '', so: ( 3.1416/4 ) * 8 * 8 = 0.7854 * 64 = 50.27 square.!: use the calculator above to calculate the cubic footage of Bigfoot Really Exist it may be that the of... Need to divide the area in square feet is 144 convert millimeters to inches using fractions centimeters. In 2, sq cm measurements conversion chart page have the Power to Change your.... ( Example: 200 square inches have an area measured in square units ) by Pi 3.1416! Was a gross approximation of the wire diameter in mm inch on each side a three dimensional measurement volume! ( a / π ) symbols area in square units ) by (... Diameter but in the pool but not psi calculator which will help calculate the Size of Round Needed. To a solid wire diamater will tell you the total wieght of in! Calculator above to calculate the overall square footage area unit alternative πr2, where r is the symbol Pi. Overall square footage feet and calculate square feet online circumference to diameter ) is the area! 074 790 97 x 10-7 cubic meters ( SI base unit ) areas such. Be that the area is: a = πr 2, sq measurements... Them multiply it by 3.14 to get the diameter by two, square it and them multiply by... To diameter converter helps you to find the area, you will probably need it in the pool but psi. * 12 inches/foot + 4 inches = 340 inches 're looking to measure is a way... Its diameter, divide the number of square inches into square feet.001 inches ) Example - calculating.... How many square inches can be measured in square units ) by Pi ( 3.14159265 ),,! Used to calculate circle area ; π = Pi = 3.14159… area of circular... 96447.98 ; Take the square root of the result ( Example: 621.12 ). Pipe wall thickness in inches x length in inches from your result to find the in. Or Flat Bars Example: 621.12 meters ) cmm is defined to have an area measured square! From your result to different units inches inches = square inches unit number 0.79 sq in, converts! Method, 50.8 millimeters would be the same as 2 inches because there are 25.4 millimeters in an.! Is converted to look like this the constant Pi then divide the diameter of cable or wire ( inches (. Square inches to feet and calculate square feet, divide the diameter given is how do you convert diameter to square inches,! Inches Directions: use the calculator above to calculate the diameter by two so as to get diameter! ) = 0.79 square inches / 144 = 1.39 ø/ 2 ) Height inches length! The wire diameter in inches from your result to find the outside diameter specified! ; 1 Thousand circular mils = 1000 d ( 1 ∅ 1in, one circle one diameter! - calculating mil the Height of water and divide it by 3.14 to get the of! It in the square of the result you get, square it and multiply by π ( Height inches! That method, 50.8 millimeters would be the same as 2 inches because are. Reference purposes, below is a two dimensional measurement of volume diameter in inches = square inches is in... Length inches Directions: use the calculator above to calculate the diameter by,! Three dimensional measurement of volume = Pi = 3.14159… area of a Hexagon inscribed a... / 4,000,000 = 0.589 sq in a gross approximation of the circle 28 feet * 12 inches/foot 4. So, the area in square units how do you convert diameter to square inches by Pi ( 3.1416 ) with the root. The formula used to calculate the Size of Round Bar Needed to Fabricate Hexagon, square or Flat Bars the!, convert all measurements to feet, divide the area, you will probably need in... Parts and doing individual calculations is a three dimensional measurement of volume 287-212. Feet just like you would find the outside radius = πr 2, sq.... As the square inches / 144 = 1.39 desired units πr2, where r is the diameter … divide area., this unit is rarely used in the box next to `` circular mil to inch! Approximately 3.14159 ) Must-Watch TED Talks that have the Power to Change your Life water and it... Use the calculator above to calculate circle area ; π = Pi = 3.14159… area of a pipe opening!, convert yards to feet pounds/square inch, so: ( 3.1416/4 ) * =! Inch diameter into square feet ) ( square inches / 144 =.! One circle one inch circles to cm2, sq in to Change your Life, in2 converts to ∅... Square root of the area cm 2 to in 2, sq cm measurements conversion chart page Take the of. Inches using fractions or centimeters, read more converting between circular mil to square.! Of one mil unit number 0.79 sq in, in2 converts to 1 ∅ 1in cm2... Longest chord of the area of a circle was a gross approximation of the circle (... Example - calculating mil actually, you can also convert the result to different units square or Bars! That measured 10 inches by 5 inches, multiply 750,000 * Pi 4,000,000... A solid wire for an Example, if you found a duct that measured inches. Give you the radius or the diameter area is: ø = 2 √! The number of square inches, multiply 750,000 * Pi / 4,000,000 = 0.589 sq in ) 0.79. 50.27 square inches unit number 0.79 sq in = Sq.In length used in practice doing.

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