Question

A 20-foot ladder is leaning against a house with the base of the ladder 6 feet from the house. How high up the house does the ladder reach? please see attached file for picture

Answer 1

use pythogras theorem with 20 as hypotenuse and 6 as one of the other sides

Answer 2

\[h= \sqrt{20^{2}-6^{2}}\]

Answer 3

19.1?

Answer 4

Thanks a lot

Answer 5

@nia_maepenix answer should be 12,