The figure can be separate into a triangle, a rectangle and a trapezium.
Triangle:
Area = 1/2 x base x height
Area = 1/2 x 16 x (25 - 4) = 168 units²
Rectangle:
Area = length x Width
Area = 16 x 4 = 64 units²
Trapezium:
Area = 1/2 (a + b) x h
Area = 1/2 (25 + 15) (10) = 200 units²
Total Area = 200 + 64 + 168 = 432 units²
Answer: 432 units²