Problema Solution
A 21 Foot ladder is placed against a vertical wall of a building, with the bottom of the ladder standing on level ground 10 feet from the base of the building, How high up the wall does the ladder reach
Answer provided by our tutors
We assume the height is H
According to the graph, we find the following formula:
H^2 + 10^2 = 21^2
We solve it
H = 18.19 feet
So the height is 18.19 feet