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14 December, 23:57

The second side of a triangular deck is 3 feet longer than the shortest side and a third side that is 3 feet shorter than twice the length of the shortest side. if the perimeter of the deck is 68 feet, what are the lengths of the three sides?

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  1. 15 December, 03:48
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    The perimeter of a triangle is:

    P = a + b + c

    We are given that:

    b = a + 3

    c = 2 a - 3

    Therefore:

    68 = a + a + 3 + 2 a - 3

    68 = 4 a

    a = 17

    and,

    b = a + 3 = 20

    c = 2a - 3 = 31
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