Answer:
784
Step-by-step explanation:
First get the total area of the rectangle
40 * 20 = 800
Now get the triangle.
The base will be 20 - 16 = 4
The height will be 40 - 32 = 8
Your formula for area of a triangle is
A = height * (base/2)
A = 8 * (4/2)
A= 8 * 2
A = 16
Now substract the triangle from the total of the rectangle
800 - 16
