Question

what is the area of the pitchers circle? a = πr²

Explanation:

Step1: Recall area formula for circle

The formula for the area of a circle is $A = \pi r^{2}$, where $r$ is the radius. Given the diameter $d = 18$ ft, the radius $r=\frac{d}{2}$.

Step2: Calculate the radius

$r=\frac{18}{2}=9$ ft.

Step3: Calculate the area

$A=\pi r^{2}=\pi\times9^{2}=81\pi$ square - feet.

Answer:

$81\pi$ square feet