SOLUTION: A 12 foot ladder is three and a half feet from a wall. How high on the wall does the ladder touch?

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Question 219029: A 12 foot ladder is three and a half feet from a wall. How high on the wall does the ladder touch?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
a^2=c^2-b^2
a^2=12^2-3.5^2
a^2=144-12.25
a^2=131.75
a=11.48 ft