Some square feet can be constituted-of-or-filled-with exhibits.
Some square feet can be constituted-of-or-filled-with (storage space).
An island can be constituted-of-or-filled-with some square kilometers.
A world-city may lay claim to some square kilometres of land.
Some square kilometers can be constituted-of-or-filled-with farmland.
Some square miles can be constituted-of-or-filled-with area.