Question

The circumference of a circle is 31.4 miles. What is the circle's radius?

Answer 1

About 5 miles or 4.9974 miles

Explanation:

Formula: C = 2*π*r

31.4 miles = 2*π*r

Solve for r, the radius

r = 31.4 / 2*π = 4.9974 miles or about 5 miles