Question

The volume of a sphere is 38808 ${cm}^3$. Find its radius and surface area.

Answer 1

Volume of sphere $=\frac{4}{3}\pi r^3=38808$

$11\times 3528=\frac{4}{3}\times \frac{22}{7}\times r^3$

$r^3=21\times 21\times 21r=21$

surface area $=4\pi r^2=\frac{4\times 22}{7}\times (21{)}^2=5544c{m}^2$