Answer:
r = 11.99701783
Step-by-step explanation:
To find the radius of a circle from the circumference, use the formula C = πr^2.
First, plug in 452.16452 for C, then solve for r.
452.16452 = πr^2
Plugging that into a calculator, we get r = 11.99701783..., or r = about 12.
