Question

Find the approximate surface area of a bowling ball with a raius of 5 inches

Answer 1

Formula for the surface area of a sphere: SA = 4·π·r2

Formula for the volume of a sphere: V = (4/3)·π·r3

Surface area to volume ratio: ( 4·π·r2 ) / ( (4/3)·π·r3 ) = 3 / r

Radius = 5 ---> 3/5

Answer 2

The surface area would be 100 pi, or rounded to 314.159.