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Question 48146: Solve the problem.

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Answer by cowess(34) About Me  (Show Source):
You can put this solution on YOUR website!
Let's say the longer leg in X m long.
120%5E2%2BX%5E2=%28X%2B40%29%5E2
X%5E2%2B14400-%28X%5E2%2B80X%2B1600%29=0
80X=14400-1600
80X=12800
Ans:X=160