SOLUTION: The sides of a triangle are in the ratio 3:4:5. If the perimeter of the triangle is 144cm, calculate the length of the longest side of the triangle.

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Question 1006588: The sides of a triangle are in the ratio 3:4:5. If the perimeter of the triangle is 144cm, calculate the length of the longest side of the triangle.
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
The perimeter of a 3-4-5 triangle is 12. The triangle in question is twelve times that, or 144. Thus the sides must be twelve times that as well, or
36:48:60 cm.