
Kenneth S. answered 11/26/17
Tutor
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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: c2 = 225 + 144c2/169.
169c2 = 169(225) + 144c2
25c2 = 169(225)
5c = 13(15)
c = 13(3) = 39.
You now can compute all three sides, and thus obtain perimeter = 90.