Well, isn't that just a happy little question! For a 10x10 room, you'll need enough 12x12 tiles to cover the entire floor. Since each tile covers an area of 12x12 square inches, you'll need to calculate the total square footage of the room and then divide by the area of each tile to find the number needed. Just remember, there are no mistakes in art, only happy accidents!
If you mean 20 in x 20 in tiles, the 240 sq ft room is 240 x 144 sq in = 34560 sq in. each tile is 20 x20 = 400 sq in tiles needed are 34560/400 = 86.4 tiles, say 90 tiles
Couple of ways to do perform this task: (1) The area of each tile is 18 x 18 inches = 324 square inches. Calculate the area of the room in Inches: 9 ft (108 in) x 12 ft (144 in) = 15552 square inches. Take the area of the room, divided by the area of each tile: 15552 sq in/ 324 sq in = 48 tiles. (2) Determine how many tiles you need to span the width of the room. 9 feet divided by 18 inches is the same as saying 9 feet divided by 1.5 feet = 6 tiles across Determine how m any tiles you need to span the length of the room. 12 feet divided by 18 inches is the same as saying 12 feet divided by 1.5 feet = 8 tiles across 6 tiles wide x 8 tiles long = 48 tiles.
150
Perimeter = 12+12+12+12 = 48
Area to be covered: 15 x 16 = 240 square units Area of tile = 12 x 12 = 144 square units Number of tiles required = 240/144 = 1.66... . So 2 tiles will be sufficient.
180
144 tiles
120
122
154
A 3x12 room is 36 square feet. This means that to fill the floor in the 3x12 room, it will take 36 tiles that are each 1 square foot (12x12) in size.
13 boxes with 13 tiles in each
168
585
If you're talking floor tiles as opposed to wall tiles and by 12x12 you mean they are 12 inches square, then the answer is 300. Because each tile is one square foot and a 15'x20' room is 300 square feet. Simple, eh?
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.
It would be 171 sf, ideally 171 tiles but no tile is truly 12"x12" . SO i would purchase 171 sf when you go buy the tiles. not the number of tiles.