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1 August, 11:51

If the sides of a triangle are in the ratio 5: 12: 13, what is the length of each side of the triangle if the perimiter of the triangle is 15

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  1. 1 August, 12:05
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    5x+12x+13x=15

    30x=15

    x=15:30

    x=0,5

    5*0,5=2,5

    12*0.5=6

    13:0,5=6,5

    2,5+6+6,5=15
  2. 1 August, 12:10
    0
    So the perimeter of the first triangle is 30; since you are given each side you can set up 3 ratios to find the unknown side lengths.

    Thus side 5 would correspond to 2.5

    Side 12 would correspond to 6

    And side 13 would be 6.5

    Another way to look at it is that since the perimeter of triangle 2 decreases by half (from 30 to 15), you can assume all side will also decrease by half
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