Kenneth S. answered • 11/26/17

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Algebra II EXPERT will help you survive & prosper

Let c = hypotenuse, 15 = b, and a = other leg

Given: c/a = 13/12, so a = 12c/13.

Using Pythagorean Theorem: c

^{2 }= 225 + 144c^{2}/169.169c

^{2}= 169(225) + 144c^{2}25c

^{2}= 169(225)5c = 13(15)

c = 13(3) = 39.

You now can compute all three sides, and thus obtain perimeter = 90.