Question

If the radius of a circle is $8$ inches, what is the area?

Answer 1

$A=\pi (8{)}^2=64$ sq. in
We know that, the Area of the circle with radius $r$ is:
$A=\pi r^2$, where $r=8$ inches given:
So,
$A=\pi (8{)}^2=64\pi$ square inches:
i.e., $A=201.06$ square inches.