Question 802900
It depends on how the rectangles are placed.  If they are placed end to end (short side to short side) all in a row, then the room is 4*72 by 2 = 288 by 2.<P>
But if they are long side to long side all in a row, then the room is 2*72 by 4 = 144 by 4.<P>
You can also arrange them in other ways.