Question

The area of a rectangular plot of land of breadth $40m$ is $3000sqm.$ Find its perimeter.

Answer 1

let the length of square plot be $x.$

Here, breadth $=40m$

So, area $=40\times x$

$=40x$

So,

$$\begin{gathered} 40x=3000 \\ \Rightarrow x=\frac{3000}{40} \\ \Rightarrow x=75 \end{gathered}$$

So, length $=75m$

Hence, perimeter

$$\begin{gathered} =2\times (75+40) \\ =2\times 115 \\ =230m \end{gathered}$$