Read the distances from the figure. The distance between the school and the library is found by adding or subtracting the given distances.<br><br>
&bull; From the figure: the positions of Pauline's home, the school, and the library are marked with their respective distances.<br>
&bull; Distance between school and library = \( 4\frac{9}{20} \) km<br><br>
Final Answer: A: \( 4\frac{9}{20} \) km