Answer:
Step-by-step explanation:
The top triangle
The top triangle is 1 *9
Area = 1/2 L * w
L = 9
w = 1
Area = 1/2 1 *9 = 4.5
Bottom Triangle
L = 8
W = 4
Area = 1/2 L * W
Area = 1/2 * 8 * 4
Area = 16
Right triangle
L = 3
w = 2
Area = 1/2 * 3 * 2
Area = 3
Total area of the triangles = 3 + 16 + 4.5
Total area = 23.5
The area of the rectangle of the brown triangle = 36 - 23.5 = 12.5
