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25 December, 01:12

the perimeter of a rectangle is twice the sum of its length and it's width. the perimeter is 40 meters and is 2 meters more than twice it's width

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  1. 25 December, 01:35
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    I assume you are looking for the length and width of the rectangle?

    W = 6 meters L = 14 meters

    Step-by-step explanation:

    P = 2 (l + w)

    We are given that the length is 2 meters more than double the width.

    Let width = x

    Let length = 2x + 2

    Calculate P based on these.

    2 [2x + 2 + x]

    2 [3x + 2]

    6x + 4 = P

    Substitue 40 for P

    6x + 4 = 40

    6x = 36

    x = 6

    Substitute 6 in for x in the length and width formulas.

    W = 6

    L = 14

    Check

    6 + 14 = 20

    And 20 times 2 = 40 meters.
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