Question

The area of a rectangle is 650 sq cm and one of its side is 13 cm, what is the perimeter of the rectangle?

• A. 186 cm
• B. 126 cm
• C. 162 cm
• D. 168 cm

Answer 1

The correct option is B 126 cm

Let the length and breadth of the rectangle be $l$ and $b$.
One side, $l$ = 13 cm
Area of rectangle, $A=650c{m}^2$
$\because$ Area of rectangle $=l\times b$
$\Rightarrow 650=13\times b$
$\Rightarrow b=\frac{650}{13}=50cm$

$\because$ Perimeter of rectangle, $P=2(l+b)$
$\Rightarrow P=2(13+50)$
$\Rightarrow P=2\left(63\right)$
$\Rightarrow P=126\text{cm}$