Question

Find the surface area of a sphere with a radius of 10 in. Express your answer in terms of π.

400π in2


800π in2


500π in2


1,600π in2

Answer 1

Given:

Radius of the sphere = 10 in

To find:

The surface area of a sphere

Solution:

Surface area of sphere:

`SA =4\pi r^2`

`SA =4* \pi * 10^2`

`SA=\pi * 400`

`SA=400\pi` in²

The surface area of a sphere is 400π in².