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The tile is bigger than the area that you want to cover (12x12 > 10x11) so one tile will do. <><><><><> However, if you meant 12x12 INCH tiles, and a 10x11 FOOT room, you would need 110 tiles.
Cor ! I love these hard questions !... 69 of course !
To determine the number of 12x12 inch tiles needed to cover 400 square feet, first calculate the area of one tile in square feet. Each tile covers 1 square foot (12 inches x 12 inches = 144 square inches = 1 square foot). Then divide the total area to be covered (400 square feet) by the area of one tile (1 square foot) to find the total number of tiles needed. In this case, it would take 400 tiles to cover 400 square feet with 12x12 inch tiles.
1344. Each tile is a square foot.
A 12*12 sq inch tile has an area of 1 square foot. So, to cover 20 sq ft you will require a minimum of 20 tiles. I say "minimum" because the actual number depends on the shape of the area to be covered and whether or not all offcuts can be used.