Question

Area of shaded portion of ___________.

• A. $100c{m}^2$
• B. $110c{m}^2$
• C. $120c{m}^2$
• D. $125c{m}^2$

Answer 1

The correct option is B $110c{m}^2$

Area of shaded portion $=$ Area of rectangle
$ABCD-\left\{\text{Sum of area of}△EAFand△EBC\right\}$
$=\left[\right(18\times 10)-\{\frac{1}{2}\times 6\times 10+\frac{1}{2}\times 10\times 8\}]$
$=[180-(30+40\left)\right]=(180-70)=110c{m}^2$.