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11 March, 14:36

The width of a rectangular block of land is 2/7 of its length. If it's perimeter is 252m, find it's length.

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  1. 11 March, 18:12
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    Step-by-step explanation:

    the perimeter is : p = 2 (x+y) ... x : width y : length

    you have the system; 2 (x+y) = 252 ... (1)

    x = (2/7) y ... (2)

    y > x ... (3)

    Substitute x = (2/7) y into (1) and simplifiy and solve for y:

    (2/7) y + y = 126

    (2y+7y) / 7 = 126

    9y = 882

    y = 98 m (the length)
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