Question

Find the area of the shaded region

Answer 1

The answer is 40

Way to solve 1:
You notice that the rectangle is split into half. Find the area of the rectangle first
10x8=80

Since that is half the rectangle, you then divide it by half.
80/2=40

Way to solve 2:
You can also see it as a triangle. The length is 10 and the height is 8. The formula for solving area for triangles is below

A=hw/2
(H is height and w is width.)

Because of order of operations, we do height times width first. In this case, that is 8x10

8x10=80

Then, you have to divide that by 2.

80/2=40