SOLUTION: the length of one leg is 6ft. The length of the hypotenuse is 3ft longer than the other leg. Find the length of the hypotenuse and the other leg.

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: the length of one leg is 6ft. The length of the hypotenuse is 3ft longer than the other leg. Find the length of the hypotenuse and the other leg.      Log On


   



Question 515734: the length of one leg is 6ft. The length of the hypotenuse is 3ft longer than the other leg. Find the length of the hypotenuse and the other leg.
Answer by nerdybill(7384) About Me  (Show Source):
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the length of one leg is 6ft. The length of the hypotenuse is 3ft longer than the other leg. Find the length of the hypotenuse and the other leg.
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Let x = length of "other leg"
then
x+3 = length of hypotenuse
.
applying Pythagorean theorem:
x^2 + 6^2 = (x+3)^2
x^2 + 6^2 = (x+3)(x+3)
x^2 + 36 = x^2+6x+9
36 = 6x+9
27 = 6x
27/6 = x
4.5 feet = x (other leg)
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hypotenuse:
x+3 = 4.5+3 = 7.5 feet