If they are 1 ft x 1 ft tiles, don't u need 104 of them?
6' x 9' (54 square feet) = 6 square yards of tiles needed.
240 square tiles are needed
22.2 tiles so buy 23 tiles.
5,184 2-square-inch tiles are needed.
236 18-inch tiles.
Four tiles are needed.
157 18 by 18 tiles are needed to cover 352 square feet.
Floor area = 12 ft x 18 ft = 216 square feet. There are 4 six-inch square tiles needed for each square foot, so 864 tiles are needed.
266.666666666 so rounding up 267 tiles.
647
18..
968