Question

Find the area of the blue shaded region.

Hint: Find the area of the rectangle, then subtract the area of the semi-circle (half a circle). Don't forget...you need the radius of the circle...not the diameter.

Use 3.14 for pi.

Area = ____ ft2

Answer 1

36 x 20 = 720 (rectangle)
Pi x r^2 = 81 pi
720 - 81 pi = 465.53

Answer 2

592.83

Explanation:

Rectangle - 36x20=720

semi-circle=1/2x3.14x9x9=127.17

720-127.17=592.83