Question

Area of parallelogram ABCD equals to 100 $c{m}^2$. What is the area of $\Delta$ DEC?

• A. $50c{m}^2$
• B. $20c{m}^2$
• C. $100c{m}^2$
• D. $30c{m}^2$

Answer 1

The correct option is A $50c{m}^2$

Area of $\Delta$ DEC = $\frac{1}{2}$ Area of ||gm ABCD
$(\Delta$ and ||gm on the same base and between the same parallels)
$\therefore Areaof\Delta$ DEC = $\frac{1}{2}\times 100c{m}^2$
$=50c{m}^2$