The formula for calculating the perimeter of a square is given by

where $s$ represents the length of one side of the square.

To elaborate, the perimeter of a square is the total distance around its outer edge. Because all four sides of a square are of equal length, you can determine the perimeter by summing the lengths of all four sides. This is the rationale behind the formula $P = 4s$, where $P$ denotes the perimeter and $s$ indicates the length of one side.

For instance, if each side of the square measures $5$ centimeters, you would compute the perimeter by multiplying $5$ by $4$, resulting in $20$ centimeters. Consequently, the total distance around the square is $20$ centimeters.

Grasping this formula is particularly beneficial in practical scenarios, such as when you need to measure the boundary of a square garden or a square piece of fabric. This straightforward calculation can save you considerable time and effort. Remember, the essential point is that all four sides of a square are always equal in length, which simplifies the process of determining the perimeter.