A 1912 foot ladder leans against a building. The base of the ladder is 712ft from the building. How high up the building does the ladder reach?
By using Pythagorean Theorem,
(712)2+h2=(1912)2(152)2+h2=(392)22254+h2=15214Subtract 2254h2=15214−2254h2=324Take the square rooth=±√324Solve for hh=18 and h=−18Choose h>0h=18ft
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