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The perimeter of a parallelogram is 140cm. If one of the sides is longer than the other by 10cm, find the length of each of its sides. |
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Answer» Given that one of the sides is longer than the other by 10cm and let it be x and x+10 Also given that its perimeter is 140cm But we know that perimeter = 2 (length + width) = 2(x + (x + 10)) 140 = 2(2x + 10) 140 = 4x + 20 140 – 20 = 4x x = 120/4 = 30 x=30cm x + 10 = 40cm Therefore the sides are 30cm and 40cm. |
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