Answer:
21.7
Step-by-step explanation:
First, find the area of the rectangle.
A = lw
The width is 8 and the length is 9.
A = 8(9)
A = 72 units squared
Next, two semicircles would make one entire circle. There are 2 semicircles. So, you would subtract the area of the circle from the area of the triangle.
A=pi(r^2)
The diameter is 8, so the radius is 4.
A = pi(4^2)
A = pi(16) or 16pi
72 - 16pi = 21.7 units squared
