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15 April, 15:44

the length of a rectangle is 4 times its width. if the perimeter of the rectangle is 100cm, find its length and width

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  1. 15 April, 16:04
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    l = 4w

    4w + 4w + w + w = 100

    w = 10

    If the width is 10, then the length has to be 40.

    4 (10) + 4 (10) + 10 + 10 = 100

    40 + 40 + 10 + 10 = 100

    100 = 100
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