1. Let the length of one side of the parallelogram be x cm. It is known that one of the sides of a parallelogram is 4 times longer than the other side. Therefore, we can write that the other side is 4x cm.
2. In total, the parallelogram has 4 sides. Therefore, in order to calculate its perimeter, you need to add the lengths of these sides together. In addition, by definition, a parallelogram has parallel sides equal to each other. Consequently, it has 4 sides, equal to x cm, x, cm, 4x cm, 4x cm.By the condition of the problem, the perimeter of the parallelogram is 60 cm, so you can write
x + x + 4x + 4x = 60,
10x = 60,
x = 6.
Hence, two are equal to 6 cm, and the other two are 24 cm (6 * 4).
Answer: two sides of a parallelogram are 6 cm, and the other two are 24 cm.
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