Posted by **Sam** on Sunday, June 17, 2007 at 10:32pm.

I need to find the area of a shaded part. it is a square with a circle the measurements that I have are pi = 3.14 and 15 ft by 15 ft. I know to find the area of the square I take base x height but cannot figure out correct formula for subtracting the circle.

To find the area of a circle, multiply the radius squared (7.5 x 7.5 ft) by pi (3.14). Subtract the circle's area from the square's area.

http://www.mathgoodies.com/lessons/vol2/circle_area.html
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