Answer:
28.5 units squared
Explanation:
Let's make this easier by dividing the same into a triangle and a rectangle.
The dimensions for the triangle is a 3 x 3 square (divided by 2) and the dimensions for the rectangle is 3 x 8.
Rectangle:
3 x 8 = 24
Triangle:
3 x 3 =9
9/2 = 4.5
24+4.5 = 28.5