Can someone answer. there is a picture. there is only one problem. you so !

Describe a way that someone could estime the length of a book

A20? -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?

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4