Radius is 18/2pi = 2.865 inches rounded to 3 decimal places
Chat with our AI personalities
A circle with a radius of 18 inches has a circumference of 113.097 inches.
Radius of circle: 18/2pi = 2.865 inches rounded to 3 decimal places
Circumference = 2*pi*18 = 113.097 inches to 3 decimal places
All depends what you mean by 18 inches, is that the circumference, the diameter or the radius
If a circle has a circumference of 18pi, the radius is 9.