Question

which of the following is the area of the given circle, in terms of π and rounded to two decimal places? 18 feet

Explanation:

Step1: Find the radius

The diameter $d = 18$ feet. The radius $r=\frac{d}{2}=\frac{18}{2}=9$ feet.

Step2: Use the area formula

The area formula of a circle is $A = \pi r^{2}$. Substitute $r = 9$ into the formula, we get $A=\pi\times9^{2}=81\pi\approx 254.47$ square - feet.

Answer:

$81\pi\approx254.47$ square feet