Question

A sphere has a radius of 3 in.

What is the surface area of the sphere?

Enter your answer, IN EXACT FORM, in the box.

Answer 1

`36\pi`

Explanation:

The surface area of a sphere is given as
`4\pi r^2`. Plugging in the given radius of 3, we have:

`4\pi \cdot 3^2=4\pi\cdot 9=\boxed{36\pi}`