Circumference of a circle in inches = 2*radius*pi or diameter*pi
Both radius and diameter must be in inches
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To calculate the diameter from the circumference, divide the circumference by pi - π 6' = 72 inches. 72 / π = 22.9 inches
7 foot circumference X 12 inches/foot = 84 inches in circumference
about 12.57 inches
A circumference of 6.28 inches measures exactly 6.28 inches!
you have to quote the diameter or radius or circumference of the circle to calculate the area. If diameter 78.53. If radius 314.15. If circumference 7.95