How many 20 by 20 tiles to do a room 12 by 8?

Answer 1

The number of tiles required will be different if they are 20 inch x 20 inch tiles rather than if they are 20 cm x 20 cm tiles. Also, the answer depends on whether the room is 12 foot by 8 ft or 12 metres x 8 metres. In the extreme case, you would need only a single 20 ft x 20 ft tile for a room that is 12 ft by 8 ft.