Question

The square field has area $196m^2$. Find the length of the wire required to fence it around $3$ times

Answer 1

Suppose $s$ is the side-length of a square. Then its area is $s^2$ sq. units. We are given that $s^2=196m^2$. Therefore $S=14m$. Thus $perimeter=4\times s=4\times 14=56m$.
The length of the wire required to fence around it $3$ times is $56\times 3=168m$.