What is the perimeter of a square with a side length of 5?

To find the perimeter of a square, you can use 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.

Plugging in the value into the formula gives you:

P = 4 * 5

P = 20

Thus, the perimeter of the square is 20. This calculation demonstrates that multiplying the side length by four provides the total distance around the square, validating that the correct answer is 20.