Question

Find the surface area of a sphere of radius $5.6cm$

Answer 1

Given:
Radius of a sphere $=5.6cm$

We know that,
Surface area of a sphere $=4\pi r^2$
where, $r=$ radius of a sphere

$\therefore$ Surface area $=4\times \frac{22}{7}\times (5.6{)}^2=4\times 22\times 0.8\times 5.6=394.24c{m}^2$

Hence, surface area is $394.24c{m}^2$