If the radius of a sphere is 5 cm, then its surface area is :

Question

Question

This question was previously asked in

RRB Group D 9 Sept 2022 Shift 3 Official Paper

Answer 1

Given:

Radius of sphere is 5 cm.

Formula used:

Surface area of sphere is \(4\pi r^2\)

Calculation:

Now, put the values given in question in formula

Surface area= \(4\pi r^2\)

Surface area= \(4\pi 5^2\)

Surface area = \(100\pi\) cm²

Hence, the surface area of sphere is \(100\pi\) cm2.