Question

Find surface area of sphere if its radius is $4cm$.

Answer 1

Given that,

Radius of sphere$=r=4cm$

Surface area of sphere$=4\pi r^2$

$=4\times \frac{22}{7}\times 4\times 4$

$=\frac{1408}{7}$

$=201.14$

Hence,

We get surface area of sphere is $201.14$