Question

Find the area of a circle with a radius of \color{purple}{2}2start color purple, 2, end color purple.

Either enter an exact answer in terms of \piπpi or use 3.143.143, point, 14 for \piπpi and enter your answer as a decimal.

Answer 1

`4\pi`

Explanation:

The area of a circle is given by the formula:

`A=\pi r^2`

where

A is the area

r is the radius of the circle

In this problem we have:

r = 2 units is the radius of the circle

Therefore, substituting in the formula above, we can find the area of the circle:

`A=\pi (2)^2 = 4 \pi`

So, the area of the circle is
`4\pi`.