Question

A 22​-foot ladder is placed against a vertical wall of a​ building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. How high up the wall does the ladder​ reach?

Answer 1

3 Feet

Explanation:

The reason why it is 3 Feet is that 22 - 19 = 3. (Another anwser is 19 + 3 = 22)