An area can be constituted-of-or-filled-with some square miles.
An area can be constituted-of-or-filled-with some square kilometers.
Some square feet can be constituted-of-or-filled-with space.
An area can be constituted-of-or-filled-with some square meters.
An area can be constituted-of-or-filled-with some square kilometres.
Some square feet can be constituted-of-or-filled-with (office space).
Some square miles can be constituted-of-or-filled-with land.
Some square feet can be constituted-of-or-filled-with (living space).