# Help this geometry problem

• March 29th 2008, 03:16 AM
sri340
Help this geometry problem
If a circle has a radius of 4 inches, how many square feet is the area of half of the circle?

sri
• March 29th 2008, 03:25 AM
Moo
Hello,

I think you should first convert inches into feet.

Rhe area of a circle is given by the formula : $A=\pi R^2$ where R is the radius.

Hence the area of half the circle will be $A'=\pi \frac{R^2}2$