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15 January, 19:05

A room has an area of 60 square meters and a perimeter of 32. What are the length and width of the room?

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  1. 15 January, 20:32
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    The dimensions of the room would be 10 x 6

    Step-by-step explanation:

    In order to find this, start with the perimeter formula and solve for either variable.

    P = 2L + 2W

    32 = 2L + 2W

    2L = 32 - 2W

    L = 16 - W

    Now we input that into the L part of the area equation.

    A = LW

    60 = LW

    60 = (16 - W) W

    60 = 16W - W^2

    W^2 + 60 = 16W

    W^2 - 16W + 60 = 0

    Now we can factor this.

    (W - 10) (W - 6)

    And to solve we set each parenthesis equal to 0

    W - 10 = 0

    W = 10

    W - 6 = 0

    W = 6

    So we know these are the two possible dimensions.
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