Answer:
15 square centimeters
Step-by-step explanation:
The shaded portion consists of two triangles. The sum of the areas of the triangles will be the area of the shaded part
Area of a triangle with base b and height h = 1/ x b x h
The triangle on the left has a base of 3.5cm and height of 4 cm
Area = 1/2 x 3.5 x 4 = 7 cm²
The triangle on the right has a base of 4 cm and the same height 4 cm
Area = 1/2 x 4 x 4 = 8 cm²
Total area of shaded portion = 7 + 8 =15 cm²
