9th grade math

the triange is 31cm, side 1 and side 2 have equal lenghts, while side 3 is one centimeter shorter than twice then length of side 1, how long is each side?

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asked by Greg
  1. What part of the triangle is 31 cm? The perimeter? Side 3?

    posted by drwls
  2. 3rd side= 2x 1st side(shorter)
    1st side=2nd side
    2x+2x=31
    4x=31
    x=31/4=7.75

    3rd side= 2*x-1
    2*7.75-1= 14.5

    1st side and 2nd side= 14.5
    3rd side=2cm

    Ans. 14.5cm, 14.5cm, 2cm

    posted by Aravind

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