Find the perimeter of the square with area 144mm2 (don’t forget the units)

Solution:
1. Given:
- Area of the square: 144 \, \text{mm}^2

2. Use the formula for the area of a square:
- Area = s^2, where s is the length of a side of the square.

3. Solve for s:
- s^2 = 144
- s = \sqrt{144}
- s = 12 \, \text{mm}

4. Use the formula for the perimeter of a square:
- Perimeter = 4s
- Substitute s = 12 \, \text{mm} into the formula.
- Perimeter = 4 \times 12
- Perimeter = 48 \, \text{mm}