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16 August, 05:35

The perimeter of a triangle is 31 cm side number one and side number two are the same length wall side number three is 1 cm shorter than twice the length of side one. What is the third side?

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  1. 16 August, 05:52
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    let the length of side number one and two be x

    length of side number three = 2x-1

    x + x + 2x - 1 = 31

    4x=32

    x=8

    2x-1 = 15

    length of third side = 15cm
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