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12 x12 = 144
A square foot is measured 12''x12'' x12''x12'', or a 12'' square.
It depends on if it's in inches smarts. Does it look like this: 12"x12" or this: 12'x12'
no .of tiles = area of room /area of tiles
area of room = 9 X12 X12 X12 inches ( 1 foot =12 inches )
area of tiles =3 X8
no.0f tiles =9 X12 X12 X12 inches /3 X 8
=648
no .of bricks = area of room /area of bricks
area of bricks =3 X8
no.0f bricks =9 X12 X12 X12 inches /3 X 8