[填空题]
A ladder 3.7 m long 45v7d lp.9oh 3hcklijm -6 0jfady;poleans against a vertical wall. The distance from the top of the lad0y6m;doj-f a pder to the ground is 3.1 m.
1.Represent this information on a diagram in the space provided above. Show the ground, the ladder and the wall as the labelled line segments.
2.Find the distance from the bottom of the ladder to the wall. m
3.Write down the acute angle made by the ladder with the wall. $^{\circ}$
