Question 707256: the sides of a triangle are 5,6,and 10. Find the length of the shortest side of a similar triangle whose perimeter is 63.
Answer by jim_thompson5910(35256)   (Show Source):
You can put this solution on YOUR website! The perimeter of the original triangle is 5+6+10 = 21
If you multiply this perimeter by 3 you get 3*21 = 63. If you don't know that 3*21 = 63, then you can see that 63/21 = 3.
Apply this same scaling to each side to get 5*3 = 15, 6*3 = 18, 10*3 = 30
So the similar triangle with side lengths 15, 18, 30 is a triangle that has a perimeter of 63.
The shortest side is therefore 15
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