SOLUTION: A 20-ft ladder is leaning against a building. If the bottom of the ladder is 12 ft from the base of the building, how high does the ladder reach?

Question 276441: A 20-ft ladder is leaning against a building. If the bottom of the ladder is 12 ft from the base of the building, how high does the ladder reach?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
A 20-ft ladder is leaning against a building. If the bottom of the ladder is 12 ft from the base of the building, how high does the ladder reach?

Ladder length = 20 ft.
distance from base = 12 feet.
Using the pythagoras theorem
20^-12^2= height^2
400-144=256
= 16^2
So height = 16 feet.
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