Question

In the figure if DE = BF = 7 cm and AC = 9 cm. Find the area of the parallelogram.

• A. $63c{m}^2$
• B. $31.5c{m}^2$
• C. $126c{m}^2$
• D. $70c{m}^2$

Answer 1

The correct option is A

$63c{m}^2$

Area of ABCD = area of $\Delta ABC$ + area of $\Delta ACD$
$=\frac{1}{2}\times 9\times 7+\frac{1}{2}\times 9\times 7$
$=\frac{63}{2}+\frac{63}{2}$
$=63c{m}^2$