Answer:
To solve this problem here are a couple methods:
1) Pythagorean theorem: [tex]a^{2} + b^{2} = c^{2}[/tex] if you have one missing side (Only works for right triangles)
2) Find the perimeter of tringle ABC and thats the perimeter of triangle w r s
3) Line both triangles up and knowing what you know from the sides, just add up the 3 sides of the triangle.
Hint: Congruent triangles are equal in angles and sides
Step-by-step explanation: