In the given figure, find the area of the shaded portion.

Area of rectangle ABCD = Length × Breadth

= 18 × 10 

= 180 cm²

Area of triangle CBE = $\frac{\mathbf{1}}{\mathbf{2}}$× Base × Height

= $\frac{1}{2}$× 8 × 10

= 40 cm²

Area of triangle EAF = $\frac{\mathbf{1}}{\mathbf{2}}$× Base × Height

= $\frac{1}{2}$× 10 × 6

= 30 cm²

Therefore, the area of the shaded region

= Area of rectangle ABCD - Area of triangle CBE - Area of triangle EAF

= 180 - 40 - 30

= 110 cm²

Hence, the area of the shaded region is 110 cm².