Total area = 53 cm²
I'm assuming that you're trying to find the area of the composite shape?
In that case, this composite shape can be broken into 3 distinct shapes: two triangles and a rectangle.
Area of left most triangle:
1/2(bh) = A
1/2(3cm × 2cm) = A
A = 3 cm²
Area of rectangle:
bh = A
A = 8 cm × 5 cm
A = 40 cm²
Area of right most triangle:
1/2(bh) = A
1/2(5 cm × 4 cm) = A
A = 10 cm²
Total area:
3 cm² + 40 cm² + 10 cm²
= 53 cm²
