What is the perimeter of a square with sides of 5 units?

The perimeter of a square can be calculated using the formula P = 4s, where P represents the perimeter and s represents the length of one side of the square. In this case, the side length is given as 5 units.

By substituting into the formula, we calculate the perimeter as follows:

P = 4 * 5 = 20 units.

This result indicates that the total distance around the square (the perimeter) is 20 units, making this the correct answer. Understanding this concept helps in recognizing how to find the perimeter of any square simply by knowing the length of its sides.