pi D = 10
D = 10 / pi = 3.1831 inches (rounded)
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diameter = 10/pi inches
The circumference of a 10-inch diameter circle is: 31.42 inches.
It is 10/pi = 3.1831, approx.
The formula for circumference is 2 x pi x radius. For a circle of 10 feet, the cirumference would be 62.8 feet. The formula for area is pi x r2. For a circle of 10 feet, the radius would be 314.16 ft.
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