75 tiles would do it (a 12*12 inch time = 1 square foot) but you need 10% over this for waste so you need to get 83 tiles.
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144
12 inches = 1 foot Thus the tiles would be 1 foot square. You therefore need 30 to cover a 30 square foot room.
1,080 tiles exactly.
If the tiles are 1 x 1 FOOT, then they cover 118 square feet.If the tiles are 1 x 1 INCH, then they cover (118/144) = 0.8194 square foot (rounded)If the tiles are 1 x 1 METER, then they cover (118 x 3.280842) = 1,270.1 square feet (rounded)
If the tiles are 1 foot squares, it will take 1,650 of them to cover 1,650 square feet. If the tiles are 16 inch square (1-1/3 square feet, each), then it would take 1,238 tiles.