Question

Three basketballs are being painted for the junior class silent auction fundraiser. If the diameter of each basketball is 11 inches, what is the total surface area that will be painted?

Answer 1

Explanation:

Surface area = 4πr^2

Diameter = 11inch

Radius = diameter/2 = 11/2

Surface area = 4 × (11/2)^2 × 22/7

= 4 × 121/4 × 22/7

= 380.29sqaure inch

For 3 basketball = 3 × 380.29

= 1140.86square inch