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: