Answer:
16 square units
Explanation:
We can find the area of the shaded region by subtracting the area of the smaller (non-shaded) triangle from the area of the black-outlined triangle.
First, we can find the area of the black-outlined triangle:
A = (1/2) ⋅ b ⋅ h
A = (1/2) ⋅ (5 + 4) ⋅ 8
A = (1/2) ⋅ 9 ⋅ 8
A = (1/2) ⋅ 72
A = 36
Next, we can find the area of the non-shaded triangle:
A = (1/2) ⋅ 5 ⋅ 8
A = (1/2) ⋅ 40
A = 20
Finally, we can subtract the area of the non-shaded triangle from the area of the black-outlined triangle:
A = 36 - 20
A = 16 square units