since the lengths of all those four sides are in a 3:2:6:7 ratio, and the whole perimeter is 126, what we do is, simply divide the whole by (3+2+6+7) and distribute accordingly.

Answer: (10,9) is the correct answer.
Answer:
i need the triangle
Step-by-step explanation:
the question is incomplete... show the diagram of the triangle
we can't solve without that