Final answer:
The perimeter of a square with sides 7 cm is 28 cm.
Step-by-step explanation:
The perimeter of a square is the sum of all its sides. Since all sides of a square are equal in length, we can calculate the perimeter by multiplying the length of one side by 4. In this case, since the length of each side is 7 cm, the perimeter of the square is 7 cm + 7 cm + 7 cm + 7 cm = 28 cm.
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