To find the perimeter of a square, we use the formula:

$\text{Perimeter} = 4 \times \text{side length}$

Given that the side length of the square is 12 inches, the calculation would be:

$\text{Perimeter} = 4 \times 12 = 48 \text{ inches}$

Therefore, the perimeter of the square is 48 inches.

Would you like more details or have any other questions?

Here are five related questions for further practice:

1. What would the perimeter be if the side length was 15 inches?
2. How does the perimeter change if the side length is doubled?
3. If the perimeter of a square is 64 inches, what is the length of each side?
4. How would you calculate the perimeter if the side length was given in feet instead of inches?
5. What is the difference between finding the perimeter of a square and a rectangle?

Tip: Remember, the perimeter of a square is always four times the length of one side since all sides are equal.