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Step-by-step explanation:

To find the lengths of the enlarged triangle, we would find the scale factor from the given length

22.5/5 = 4.5

So to find the other sides you would multiply 3 and 6 by 4.5

3 * 4.5 = 13.5

6 * 4.5 = 27

So all 3 lengths of the triangle are 22.5, 13.5, and 27

To find the perimeter you add all

22.5 + 13.5 + 27 = 63

Your answer is 63