Answer:
90 cm2
Step-by-step explanation:
The figure consists of an inner rectangle with dimensions 8 by 10 and a right triangle on the bottom right with dimensions
base = 12 - 8 = 4 cm and height = 10 - 5 = 5 cm
Total area (A) is equal to the sum of the area of the rectangle and the right triangle, that is
area of rectangle = 10 × 8 = 80 cm²
area of triangle = 0.5 × 4 × 5 = 10 cm²
Hence
A = 80 cm² + 10 cm² = 90 cm² → B
