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8 May, 20:20

If a length of a rectangle is four times its width. what is its perimeter is 90m. how can I find the dimentions

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  1. 8 May, 21:11
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    W = width

    4w = length

    perimeter = 2 (length) + 2 (width)

    perimeter = 2 (4w) + 2w

    perimeter = 8w + 2w

    perimeter = 10w

    90 = 10w

    9 = w

    length = 4w, 4 (9) = 36.

    Length is 36 m. Width is 9 m.
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