An area can be constituted-of-or-filled-with some square kilometers.
A range can be constituted-of-or-filled-with some kilometers.
A speed can be constituted-of-or-filled-with some kilometers.
An altitude can be constituted-of-or-filled-with some kilometers.
Some square kilometers can be constituted-of-or-filled-with land.
A radius can be constituted-of-or-filled-with some kilometers.
A total can be constituted-of-or-filled-with some kilometers.