The circumference of a bowling ball is 8π in. Find the surface area of the bowling ball. Express your answer in terms of π. a. 16π in2    b. 72π in2 c. 64π in2 d. 32π in2

circumference of a sphere: 2 * pi * r
8 / 2 = 4
r = 4

surface area of a sphere: 4 * pi * r^2
4 * pi * 4^2
4 * pi * 16
64pi

answer is c :)