Question

what is the exact area of the circle below? show your work.

Explanation:

Step1: Recall area formula

The formula for the area of a circle is $A = \pi r^{2}$, where $r$ is the radius of the circle.

Step2: Identify radius value

The radius of the given circle is $r = 20$ cm.

Step3: Calculate the area

Substitute $r = 20$ into the formula: $A=\pi\times(20)^{2}=400\pi$ $cm^{2}$.

Answer:

$400\pi$ $cm^{2}$