SOLUTION: A 15 ft. ladder is placed up against the side of a building. The bottom of the building and the bottom of the ladder are 9 ft. apart. At what point (in feet) does the top of the la

Algebra ->  Triangles -> SOLUTION: A 15 ft. ladder is placed up against the side of a building. The bottom of the building and the bottom of the ladder are 9 ft. apart. At what point (in feet) does the top of the la      Log On


   



Question 500066: A 15 ft. ladder is placed up against the side of a building. The bottom of the building and the bottom of the ladder are 9 ft. apart. At what point (in feet) does the top of the ladder touch the building?
Answer by cleomenius(959) About Me  (Show Source):
You can put this solution on YOUR website!
a^2 + 9^2 = 15^2
a^2 + 81 = 225
144 + 81 = 225
a = sqrt%28144%29
a = 12
Cleomenius,