Question

Find the perimeter of a rectangle whose area is 600 cm² and breadth is 25 cm.

Answer 1

Let the length of the rectangle be x cm.
Breadth of the rectangle is 25 cm.
Area of the rectangle = (Length × Breadth) cm²
= (x×25) cm²
=25x cm²

It is given that the area of the rectangle is 600 cm².
$$\begin{gathered} \Rightarrow 25x=600 \\ \Rightarrow x=\frac{600}{25}=24 \end{gathered}$$
So, the length of the rectangle is 24 cm.
Perimeter of the rectangle = 2(Length + Breadth) units
= 2(25 + 24) cm
= 98 cm