Final answer:
The perimeter of a square can be calculated by multiplying the length of one side by 4.
Step-by-step explanation:
The perimeter of a square can be calculated using the formula P = 4l, where l represents the length of one side. To find the perimeter of a square, you simply multiply the length of one side by 4. For example, if the length of one side is 4 units, the perimeter of the square would be 4 x 4 = 16 units.