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Where is the hospital library?
1.5km = 150000m = cm,2km = 200000m, 1km = 100000m,

150000×1100000 =1.5 (cm)

200000× 1 100000=2 (cm)

100000×1100000 =1(cm)

Because the library is just north of the hospital,

② The bus stop is 45 north-east of the library.

③ The Children's Palace is 60 degrees southwest of the bus station;

So their positions are shown in the following figure: