Final answer:
The length of the other side of the rectangle is 2 cm.
Step-by-step explanation:
To find the length of the other side of the rectangle, we need to determine the length of the missing side. We know that the perimeter of the rectangle is shorter than the perimeter of a square with a side length of 4 cm. The perimeter of a rectangle is calculated by adding the length of all four sides. Since one side of the rectangle is given as 6 cm, we can calculate the perimeter of the rectangle as 6 cm + 6 cm + x cm + x cm = 4 cm + 4 cm + 4 cm + 4 cm. Simplifying this equation, we get 12 cm + 2x cm = 16 cm. Subtracting 12 cm from both sides, we obtain 2x cm = 4 cm. Dividing both sides by 2, we find that x cm = 2 cm. Therefore, the length of the other side of the rectangle is 2 cm.