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14 January, 04:40

Two equal sides of a triangle are each 5 metres less than the twice the third side. If the perimeter of the triangle is 55 metres, find the length ...

Class 8 question

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  1. 14 January, 05:13
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    Answer: The sides are 13, 21, & 21 meters

    Step-by-step explanation:

    Let x represent the length of the base. Then the congruent side lengths are 2x - 5.

    Perimeter is the sum of the sides so

    (2x - 5) + (2x - 5) + (x) = 55

    5x - 10 = 55

    5x = 65

    x = 13

    The length of the base is 13 meters.

    The congruent side lengths are 2 (13) - 5

    = 26 - 5

    = 21
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