You can algebraically solve for the length of all of the sides. First, you can represent each of the sides as variables, or in the terms of one of the sides, such as the shortest side, as you know the relationship with this side and the other two sides. Then, you may add up all of the sides to be the perimeter (express this as an equation). Eventually, you'll find one variable's value, which will help you find the other two sides' lengths.
