Hey there!
The formula for finding the area of a circle is [tex] \pi [/tex][tex] r^{2} [/tex].
Our radius is 18 in., and we already have the value for pi, 3.14.
Let's plug in our values into the equation.
a = [tex] 18^{2} [/tex] * 3.14
18 * 18 = 324
324 * 3.14 = 1017.36
Our area for the circle is 1017.36 in^2.
However, in your terms, the answer is 324[tex] \pi [/tex]
I hope this helps!
