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22 October, 21:28

The length of a rectangle is 4 times it's width. It's perimeter is 90 m. Find it's dimensions. use p

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  1. 23 October, 00:08
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    w = 9

    l = 36

    Step-by-step explanation:

    P = 90

    l = 4w

    P=2 (l+w)

    90 = 2 (4w+w)

    90 = 10w

    w = 9

    90 = 2 (l+9)

    90 = 2l + 18

    72 = 2l

    l = 36
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