Problema Solution
A 15 foot ladder is placed against a vertical wall of a building, with the bottom of the ladder standing on level ground 9 feet from the base of the building. how high up the wall does the ladder reach?
Answer provided by our tutors
92+b2 = 15 2
81+b2=225
225-81=b2
144=b2
Square Root of 144= 12 feet