Question

The area of the shaded region is 36 ft2 . What is the area of the unshaded region A) 9 ft2B) 18 ft2C) 36 ft2D) 72 ft2

Answer 1

Given

The area of the shaded region is 36 ft2 .

Answer

Area of rectangle = 36

l x b = 36

12 x b = 36

b = 36/12

b = 3

shaded region is a triangle with area = 1/2 x base x height = 1/2 x 3 x 12 = 12 ft2

Area of unshaded region = 36 - 18 = 18ft2

Option B is answer.