# Sphere: Surface Area

How to find the surface area of a sphere: formula, 1 example, and its solution.

## Formula

### Formula

A = 4πr^{2}

A: Surface area of a sphere

r: Radius

## Example

### Example

### Solution

r = 6

Then A = 4⋅π⋅6^{2}.

6^{2} = 36

4⋅36 = 144

So the surface area of the sphere is 144π.