Not too sure what you're asking. If your tiles are 12 inches x 12 inches, they would be 1 square foot each. Therefore, if you have 169 square feet and you are installing tiles that are 1 square foot each, you would need 169 tiles.
Floor area x [ 1 tile / area of 1 tile] = number of tiles needed
A couple of units to consider...
1 square foot = 144 square inches
1 foot = 12 inches
(length in inches) x (length in inches) = square inches
(length in feet) x (length in feet) = square feet
If you have floor area in square feet, you'll need tile area in square feet.
Measure the tile left to right and top to bottom. Multiply these two dimensions together to get the area of 1 tile. Now, if you measured the tile in inches you'll need to divide by 144 to get the area in square feet for 1 tile. If you measured in feet, you don't need do any further work to get the area in square feet.
13 feet by 12 feet is the same as 156 inches by 144 inches. Multiply 156 by 144 to find that the room's area is 22464 square inches. Next, find the area of each tile by multiplying 13 by 13 to get 169 square inches. We need to find how many 169 square inch tiles can fit in a 22464 square inch room, so divide 22464 by 169 and get 132.923077. Round that up to the nearest whole number and get:133 tiles.
Area of each tile = 13*13 = 169 sq inches. Area to be cover = 12*12 sq ft = 20,736 sq inches. So minimum number of tiles required = 20,736/169 = 122.7 = 123 tiles. However, this assumes that the shape is well behaved and that all offcuts can be used. In real life, you should allow 5% more tiles for wastage.
It depends on whether they are 12 cm x 12 cm tiles or 12 inch x 12 inch tiles or some other, unspecified, measure.
Depends on the size of the tiles.
12 x 13 or 156 tiles.
13 feet by 12 feet is the same as 156 inches by 144 inches. Multiply 156 by 144 to find that the room's area is 22464 square inches. Next, find the area of each tile by multiplying 13 by 13 to get 169 square inches. We need to find how many 169 square inch tiles can fit in a 22464 square inch room, so divide 22464 by 169 and get 132.923077. Round that up to the nearest whole number and get:133 tiles.
Area of each tile = 13*13 = 169 sq inches. Area to be cover = 12*12 sq ft = 20,736 sq inches. So minimum number of tiles required = 20,736/169 = 122.7 = 123 tiles. However, this assumes that the shape is well behaved and that all offcuts can be used. In real life, you should allow 5% more tiles for wastage.
112
It depends on whether they are 12 cm x 12 cm tiles or 12 inch x 12 inch tiles or some other, unspecified, measure.
Depends on the size of the tiles.
12 tiles by 18 tiles or 216 tiles total
12 x 13 or 156 tiles.
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.
You will need at least 192 tiles.
24 sq feet = 24 x 12 x 12 sq inches number of tiles = 24 x 12 x 12 / (16 x 16) tiles = 13.5 tiles
You would need 138 tiles to cover 115 square feet with 12-inch tiles. To calculate this, divide the total square footage (115) by the area of one tile (1 square foot for a 12-inch tile). So, 115 (sq ft) / 1 (sq ft per tile) = 115 tiles.
It would be 9 tiles wide by 12 tiles long. That gives you a total of 108 tiles.