SOLUTION: a ladder 9m long is placed against a wall 2m away from its base. what is the height reached by the ladder?

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Question 535973: a ladder 9m long is placed against a wall 2m away from its base. what is the height reached by the ladder?

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
81=4+x^2
77=x^2