The area of a square field is $325\ m^2$. Find the approximate length of one side of the field.

Given: 

The area of a square field is $325\ m^2$.

To do: 

We have to find the approximate length of one side of the field.

Solution:

The area of a square field $=325\ m^2$

Therefore,

Length of one side of the field $=\sqrt{Area}$

$=\sqrt{325}$

$=\sqrt{25\times13}$

$=\sqrt{5\times5\times13}$

$=5\times\sqrt{13}$

$=5\times3.606$

$=18.03\ m$

The approximate length of one side of the field is $18.03\ m$.