Question

Find the surface area of a sphere of radius:
$10.5$cm

Answer 1

Given,

$Radiusr=10.5cm$

We know that the surface area of the sphere
$=4\pi r^2$

$=4\times 3.14\times 10.5\times 10.5$

$=1384.74c{m}^2$

Hence, this is the answer.