Answer:The perimeter of a square is calculated by adding up all four sides. Since all sides of a square are equal, you can also calculate the perimeter by multiplying the length of one side by 4.Given that one side of the square is 35 cm, the perimeter would be:\[\text{Perimeter} = 4 \times 35 \text{ cm} = 140 \text{ cm}\]So, the perimeter of the square is **140 cm**.