A circle has a radius of 2 cm. What is the area of the circle?

1 Answer
Sep 15, 2016

The area of the circle is 4pi4π or 12.5663706143591721...

Explanation:

First, start off by writing the formula for the area of a circle.

A=pir^2
Substitute for the variables
r=2, thus
A=pir^2 would be
A=pi2^2
A=pi4

Answer: Either 4pi or 12.5663706143591721...

For the final answer its up to you to decide whether you should wrote out the entire number ( in some cases you might be asked to round) or keep it as pi.