Question

Find the surface area of a sphere of diameter:
$14cm$

Answer 1

As we know that,

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

Given:-

Diameter of sphere $=14cm$

Radius of sphere $=\frac{14}{2}cm$

Therefore,

Surface area of sphere

$=4\times \frac{22}{7}\times 7^2=22\times 28=616{cm}^2$