Question

Find the surface area and volume of a sphere having a radius of 4"

Answer 1

Surface area = 4 x Pi x R²
= 4 x Pi x 4²
= 201.06 inches

Volume = (4/3) x Pi x R³
= (4/3) x Pi x 4³
= 268.08 cubic inches

Answer 2

The surface area of a sphere = 4 π r²
= 4 π 4²
= 4 π 16
= 64 π in.²
The volume of a sphere = 4/3 π r³
= 4/3 π (4)³
= 4/3 π 64
= 256/3 π in.³