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.
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A 12 inch by 12 inch tile is 1 ft by 1 ft, which is 1 square foot. So you would need 120 tiles.
1344. Each tile is a square foot.
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.
16X16=256 inches 12X12=144 inches=1 Square Foot 126X144=18144 18144/256=79 79 16X16 tiles