What is the perimeter of a square with a side length of 3 units?

To find the perimeter of a square, you can use the formula:

Perimeter = 4 * side length

In this case, the side length of the square is given as 3 units. Substituting this value into the formula, we get:

Perimeter = 4 * 3 = 12 units.

This calculation shows that the total distance around the square, which is the perimeter, is 12 units. Understanding this concept is crucial because it highlights the relationship between the side length of a square and its perimeter, allowing for easy calculations with different side lengths in future problems.