You would first start by dividing the diameter by two to get the radius. This provides a radius of 1.375 inches. The formula for the area of a circle is pi*radius^2. So 1.375^2 = 1.891. This answer multiplied by pi gives a final area of 5.94 square inches.
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The formula for the area of a circle is A = PI R squared.Pi is about 3.1416R is the radius, half the diameter or 18/2 = 9A= 3.1416 * 9 * 9 = 254.4696 Using more digits in PI will give slightly different answers such as3.14159265359 * 9 * 9 = 254.469004941 which still is about the same value.So the area of an an 8 inch diameter circle (rounded) is about 254.5 square inches
Area of a circle = pi x radius squared. The radius of a circle is equal to half the diameter, in this case 600/2 = 300mm. So area = pi x 3002 = 282743 mm2 (nearest mm2)
Its circumference = 600*pi mm
circomference of a circle = pi*diameter = pi*14
Please Calculate the weight per fit of G.I. pipe