[填空题]
A ladder 3.7 m long leans aga*oray o :y3b;xuw5tb+ inawcwijr65:mj)j7+e53u p -z ztb3bkf st a vertical wall. The distance from the top of the ladder to the ground is 3.1 m.
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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. $^{\circ}$
