Question

first side triangle 2m longer than second third side twice length of second perimeter 34m length of each side?

Answer 1

I could understand your question if you used appropriate capitalization and punctuation.

Answer 2

if 2nd side is x, then we have

x+2 + x + 2x = 34
4x + 2 = 34
x = 8

so, the sides are 10,8,16