Circ = 2*pi*R = 62.8319 metres (to 4 dp)
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A circle with a radius of 10 m has a circumference of 62.83 m.
A circle with a radius of 10 inches has a circumference of 62.8 inches.
If the circumference of a circle is 10 feet the radius is: about 1.592 feet. For this type of calculation, divide the circumference by Pi (about 3.1416). This gives you the diameter. Next, divide the diameter by two to get the radius.
A circle with a radius of 10 meters has an area of 314 square meters.
formula for circumference is 2(pi)(radius) therefore: 10=2(pi)(radius) solving: radius = 10 / (2 pi) radius = 1.59