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 = $4\mathrm{\pi }{r}^2=4\times 3.14\times {\left(21\right)}^2$ = 5538.96 cm²

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

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