SOLUTION: The aea of a right triangle is 210 square centimeters.Its perimeter is 70 centimeters.Find the length of its hypotenuse. Please help me I am having difficulties please asap than

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Question 981218: The aea of a right triangle is 210 square centimeters.Its perimeter is 70 centimeters.Find the length of its hypotenuse.
Please help me I am having difficulties please asap thanks
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
Right Triangle, legs x and y, hypotenuse r.

Either leg can be a base.
%281%2F2%29xy=210

Account for perimeter.
x%2By%2Br=70

Pythagorean Theorem relationship, because Right Triangle.
x%5E2%2By%5E2=r%5E2

Possibly more than one way to go with the algebraic steps. Three equations in three unknown variables. (I have not yet tried to solve the system).