The perimeter of the parallelogram is 72cm, one of its sides is 4cm. Find the lengths of the other sides of the parallelogram.

1. Find the second side of the parallelogram:

(72 – 2 * 4): 2 = (72 – 8): 2 = 64: 2 = 32 (cm).

2. Since the opposite sides of the parallelogram are equal, respectively, the opposite sides will be 4 cm and 32 cm.

Answer: the other sides of the parallelogram are 32 cm, 4 cm and 32 cm.



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