Answer:
240 units²
Explanation:
Since it's a composite figure, find the area of the rectangle then the triangle
rectangle
A = wl
A = 20*10
A = 200 units²
Triangle
A = 1/2 wh
A = 1/2 (20)(4)
A = 1/2 (80)
A = 40 units²
Add them together and get 240 units²