Asked in

What is the radius of a circle with a 20' circumference?


User Avatar
Wiki User
June 22, 2017 11:13PM

The formula for size and circumference is pi x diameter. Let's work that backwards. If the circumference is 20, divide that by pi (3.14) that will give you the diameter. We know that the radius is half of the diameter, so take the answer you just got, divide by 2, and that will be the radius.