SOLUTION: please help me solve this question for the missing side (a=12,b=16)

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Question 596928: please help me solve this question for the missing side (a=12,b=16)
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
c^2=12^2+16^2
c^2=144+256
c^2=400
sqrt c^2=20