As given by the question
There are given that the value is 30 miles.
Now,
To convert the miles into kilometers, multiply with 1.609 by their length value
So,
[tex]\begin{gathered} 30\text{ mi=30}\times1.609\text{ kilometers} \\ 30\text{ mi= 48.2803 kilometers} \\ =48.28 \end{gathered}[/tex]