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The proportion between the hypotenuse of a right triangle and one of its legs is 13 12 , and the other leg is 15 cm long. Find the perimeter of the triangle.
The proportion between the hypotenuse of a right triangle and one of its legs is 13 12 , and the other leg is 15 cm long. Find the perimeter of the triangle.
Answer:Perimeter = 90Step-by-step explanation:Let c = hypotenuse, 15 = b, and a = other legGiven: c/a = 13/12, so a = 12c/13.c^2 = b^2+a^2Using Pythagorean Theorem: c^2 = 225 + 144c^2/169.169c^2 = 169(225) + 144c^225c^2 = 169(225)5c = 13(15)c = 13(3) = 39.and a = 12*39/13 = 12*3 = 36You now can compute all three sides, andthus obtain perimeter = 36+39+15 = 90....
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