SOLUTION: Side one of a triangle is 9. Side two of the triangle is 12 How long is side 3? thanks

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Question 83156: Side one of a triangle is 9.
Side two of the triangle is 12
How long is side 3?
thanks
Answer by Mona27(45) About Me  (Show Source):
You can put this solution on YOUR website!
You need one more piece of information to solve this one.
You either need an angle between the two sides, or the question states that the triangle is right-angled.