# 9th grade math

posted by Greg

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. drwls

What part of the triangle is 31 cm? The perimeter? Side 3?

2. Aravind

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

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