Question

A 22-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 1

Explanation:

By the Pythagorean Theorem

`h^2+9^2=22^2\\ \\ h^2=22^2-9^2\\ \\ h^2=403\\ \\ h=√(403)ft\\ \\ h\approx 20.07ft`