Question

Length of rectangle is $8$ cm and area of rectangle $56{\text{cm}}^2$. Find the perimeter of rectangle and its breadth.

Answer 1

Area of rectangle $=lb$ {$l=$ length, $b=$ breadth)

$\Rightarrow 56=8b$ .... $(l=8)$

$\Rightarrow b=7cm$

Perimeter $=2(l+b)=2(8+7)=30cm$.