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 room = 9 X12 X12 X12 inches ( 1 foot =12 inches )

area of bricks =3 X8

no.0f bricks =9 X12 X12 X12 inches /3 X 8

=648