What is the perimeter of a square with a side length of 6 units?

To find the perimeter of a square, the formula is to multiply the length of one side by 4, since a square has four equal sides. In this case, if the side length of the square is 6 units, the calculation for the perimeter would be:

Perimeter = 4 × side length

Perimeter = 4 × 6 units

Perimeter = 24 units

Thus, the perimeter of the square is 24 units, which corresponds to the correct response. This understanding is critical for solving similar problems involving the perimeter of squares and reinforces the concept of how to calculate perimeter in geometric figures.