Question

HELP? Aqua blue paint costs $1.50 per square inch. How much more money would it cost to paint a bowling ball with a radius 4.2913 inches in length than to paint a tennis ball with a radius 1.2598 inches in length? Round your answer to the nearest cent.

A.
$4.55
B.
$17.06
C.
$317.20
D.
$1,451.91

Answer 1

Area of sphere:
A= 4 r² π
1.5 ( 4 · 4.2913² · 3.14 - 4 · 1.2598² · 3.14 ) =
= 1.5 ( 231.2956 - 19.933926 ) = 1.5 · 211.36168= 317.044252
Answer: C) $317.20