Question

1. Find the circumference

2. Find the radius

Answer 1

C =40.82 inches

10.51 inches = r

Explanation:

The circumference is is

C = pi * d

C = 13 pi

C = 13 * 3.14

C =40.82 inches

The radius is found from

C = 2 * pi * r

65.98 = 2 * 3.14 * r

65.98 = 6.28 r

65.98/6.28 = r

10.50636943 = r

10.51 inches = r