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14 December, 21:30

The perimeter of a triangle is 93 feet. Side a of the triangle is twice as long as side b. Side c is 3 feet longer than side a. Find the length of each side.

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  1. 14 December, 21:33
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    a = 73.2

    b = 36.6

    c = 76.2

    Step-by-step explanation:

    Perimeter of the triangle is the distance round the triangle.

    Let the 3 sides be a, b and c

    Side a of the triangle is twice as long as side b. This means

    a = 2b

    Side c is 3 feet longer than side a. This means

    c = a + 3

    The perimeter of the triangle is 93 feets. Formula for finding the perimeter of the triangle is

    (a + b + c) / 2

    Therefore,

    93 = (2b + b + 2b + 3) / 2

    93 = (5b + 3) / 2

    5b + 3 = 93 * 2 = 186

    5b = 186 - 3 = 183

    b = 183/5 = 36.6

    a = 2b = 2 * 36.6 = 73.2

    c = a + 3 = 73.2 + 3 = 76.2
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