Question

Find the surface area and the volume of a beach ball shown in the figure. 

Answer 1

Radius of the beach ball, r = \[\frac{42}{2}\] = 21 cm

Surface area of the beach ball, S = \[4\pi r^2 = 4 \times 3.14 \times \left( 21 \right)^2\]  = 5538.96 cm² 

Volume of the beach ball, V = \[\frac{4}{3}\pi r^3 = \frac{4}{3} \times 3.14 \times \left( 21 \right)^3\] = 38772.72 cm³

Thus, the surface area and volume of the beach ball are 5538.96 cm² and 38772.72 cm³, respectively.