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?

1. 0
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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