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April 20, 2014

April 20, 2014

Posted by **erika** on Wednesday, February 23, 2011 at 9:49am.

- math -
**Reiny**, Wednesday, February 23, 2011 at 10:45amthe perimeter of two similar triangles is proportional to the ratio of their sides

ratio of sides = 13:39 = 1:3

the perimeter of the smaller is 30

so the perimeter of the larger is 90.

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