Perimeter of Square

Perimeter means the total boundary which is covered by the close shape.

Perimeter can be thus obtained by adding all the given sides of the shape.

Formula for finding perimeter of Square:
When for a given shape there are sides of equal length, we can make a formula to find the perimeter.

Thus the formula for perimeter and area can be obtained as follows:

In a square all the sides are equal. 

Considering the length of sides to be 'S'.
According to concept of perimeter: 
Perimeter of square should be = S + S + S + S.
                                                 = 4 * S.
Thus formula for perimeter becomes 4 * S.