What is the perimeter of a 7cm square?

The perimeter of a square is calculated by adding the lengths of all four sides. Since a square has four equal sides, the perimeter can be found using the formula ( P = 4 \times \text{side length} ). For a square with a side length of 7 cm, the perimeter is ( P = 4 \times 7 = 28 ) cm. Thus, the perimeter of the 7 cm square is 28 cm.