Practice!

Sample Problem

What is the area of the shaded part of the figure?

The area is cm2

Solution

 

The whole area is (2 + 6+ 8+ 2) × 10= 180 cm2.

The un-shaded area is 5× 7+ 6× (10- 7) + 10× 2 = 73 cm2.

The shaded area is 180– 73= 107 cm2.