Question 801291: How do i find the measure of each side of a scalene triangle when I already have the perimeter? Answer by KMST(5328) (Show Source):
You can put this solution on YOUR website! You need more information than just the perimeter. The information may be in a drawing that comes with the words of the problem.
If you have expressions for the length of each side, such as , and for example, you can write an equation that would look like --> --> --> -->
If the additional information was the measures of angles, it would be a more difficult problem, but I am guessing that is not your case.