Question

Find the cost of fencing a square field of side $35m$ at the rate of$₹40$ per meter.

Answer 1

Step 1 Finding the perimeter of the square field:

Given, the square field has a side $35m$

Fencing should be around the boundary of the square field.

Perimeter of square$=4a$

$$\begin{gathered} =4\times 35 \\ =140m \end{gathered}$$

Step 2 Finding the cost of fencing the square field:

The cost of fencing one meter of a square field is $₹40$

The cost of fencing a $140m$square field is $40\times 140=₹5600.$

Hence, the cost of fencing $140m$ of a square field is$₹5600$