SOLUTION: what is the longest side of a triangle with a perimeter of 39 if a similar triangle has side lengths of 3,4, and 6 1)12 2)13 3)18 4)20

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Question 389125: what is the longest side of a triangle with a perimeter of 39 if a similar triangle has side lengths of 3,4, and 6
1)12
2)13
3)18
4)20

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
3 + 4 + 6 = 13
39/13 = 3
3*6 = 18, the longest side

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