1 tile will suffice - if you cut it into 214 very thin strips.
If you want a proper answer you need to know the area of the floor that you are trying to cover - not just its length!
Depends on the size of the tiles.
128.2 tiles
If the floor tiles are measured in inches and the room is measured in feet then the tiles are 1sq feet and the room is 6x8 = 48 sq feet so you would need 48 tiles.
To cover 720 sq feet of floor with 18" x 18" tile, you would need 320 tiles.
205.3125 tiles exactly OR 206 tiles, with a bit left over!
240
Depends on the size of the tiles.
5.8
128.2 tiles
If the floor tiles are measured in inches and the room is measured in feet then the tiles are 1sq feet and the room is 6x8 = 48 sq feet so you would need 48 tiles.
To cover 720 sq feet of floor with 18" x 18" tile, you would need 320 tiles.
205.3125 tiles exactly OR 206 tiles, with a bit left over!
675 of them. Get extra for breakage.
240 square tiles are needed
1.5 tiles. (I know it's unusual, but it's true.)
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6' x 9' (54 square feet) = 6 square yards of tiles needed.