Question

The area of a rectangle is 20 $m^2$ and its length is 5 m. Find the perimeter of the same rectangle.

• A. 20 m
• B. 18 m
• C. 16 m
• D. 12 m

Answer 1

The correct option is B 18 m

Given,
Area of the recatangle = 20 $m^2$
Length of the rectangle = 5 m

Area of the recatangle
= length x breadth
$\Rightarrow$ 20 $m^2$ = 5 m x breadth
$\Rightarrow$ breadth = $\frac{20}{5}$ m
$\Rightarrow$ breadth = 4 m

$\therefore$ The perimeter of the rectangle
= 2 x ( length + breadth)
= 2 x ( 5 m + 4 m)
= 2 x 9 m
= 18 m