It depends on whether the 12x12 tiles are measured in inches, centimetres or ssome other measure. The criticalinformation is not provided in the question so it cannot be answered.
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1540
650
assuming that's 12feet x 12feet, 16 square yards.
If the tiles are 12 inches square... 8352 tiles ! However if they're 12 feet square... 58 tiles
123 will cover it. Get extras.