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?
The ladder reaches____feet up the wall.
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?
Will use Pythagoras Theorem:
15^2=9^2 + H^2
H=225 - 81=144 take the sqrt of both sides
H=12 Feet-the height of the ladder up the wall.
