What is the perimeter formula for a square?

The formula for the perimeter of a square is P = 4s, where "s" represents the length of one side of the square. This is derived from the fact that a square has four equal sides. Since all sides are of the same length, to find the perimeter, you simply multiply the length of one side by the total number of sides, which is four.

For instance, if each side of the square is 3 units long, the perimeter would be 4 times 3, resulting in a total perimeter of 12 units. This formula is specific to squares and highlights the uniformity in their shape.

Other options provided represent formulas for different geometric shapes or incorrectly express the perimeter. For example, the formula P = 2L + 2W refers to the perimeter of a rectangle, where L is the length and W is the width. The expression P = s^2 gives the area of a square, and P = length × width also indicates area, specifically for rectangles. None of these represent the perimeter of a square, making the formula P = 4s the correct choice.