Answer: The library is 3,000 meters away.
Step-by-step explanation:
The solution of this exercise can be obtained by making the conversion from kilometers to meters.
You know that the library is 3 kilometers away.
Let's remember that 1 kilometer has 1,000 meters.
Then, the conversion from 3 kilometers to meters can be made by this proccedure:
3 kilometers to meters:
[tex]=(3\ kilometers)(\frac{1,000\ meters}{1\ kilometers})\\\\=3,000\ meters[/tex]
Then the library is 3,000 meters away.