SOLUTION: An 18-foot ladder leans against the wall of a building. The base of the ladder is 9 feet from the building on level ground. How many feet up the wall, is the top of the ladder? L

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Question 1012446: An 18-foot ladder leans against the wall of a building. The base of the ladder is 9 feet from the building on level ground.
How many feet up the wall, is the top of the ladder? Leave your answer in simplest radical form.

Answer by ikleyn(52781)   (Show Source): You can put this solution on YOUR website!
.
An 18-foot ladder leans against the wall of a building. The base of the ladder is 9 feet from the building on level ground.
How many feet up the wall, is the top of the ladder? Leave your answer in simplest radical form.
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From the right-angled triangle you have

h = = feet

By the way, this right-angled triangle is 30-60-90 degrees.


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