Answer:
3,120 in^2
Explanation:
we can see that there are two rectangles here.
The area of a rectangle is:
Base x width
Calculate the area of the exterior one
Area = 135 x 93 = 12 555 in^2
Now the inner one
Area = 111 x 85 = 9 435 in^2
For find the shaded area we have to make the difference between the two areas
Area of shaded part = 12 555 - 9 435 = 3,120 in^2