Find the side of the square whose perimeter is $ 20 \mathrm{~m} $.

To do:

We have to find the side of the square.

Solution:

We know that,

The perimeter of a square with side $a$ is $4a$.

Therefore,

$20\ m = 4\times$ each side of the square

Each side of the square $ =\frac{20\ m}{4}$

$ =5\ m$

The side of the square is $ 5\ m$.