Question

Trevor needs a new bicycle tire. His tire has a circumference of about 113.04 inches. What is the diameter of his tire?

Answer 1

The formula for circumference is 2(pi)r, so first you would divide by 2, which is 56.52 (about) then divide by pi and you get 18. So the radius is 18, so multiply 18 by 2 and you get 36. 
So therefore, the diameter is 36 inches