## Prealgebra (7th Edition)

$A=6^2\pi=36\pi\approx 36\times\frac{22}{7}\approx113.143$ square in.
The area of the circle can be calculated as: $A=r^2\pi$ where r is the radius. Here: $A=6^2\pi=36\pi\approx 36\times\frac{22}{7}\approx113.143$ square in.