do you mean 12"x12"? if so 400+3%waste for cuts = 412..so 10 boxes.
20" = 2.78 square feet. Now divide the area of the tiles into the area of the room. 140/2.78 = 51 tiles
You will need at least 66,828 1/4 tiles to cover that area.
Tiles that are two feet on a side cover 4 square feet. 378 of them cover 1512 square feet.
These 327 tiles will cover an area of 383.8 square feet.
Assuming you mean 16x16 inches tiles... 441 tiles would cover the area exactly
Each tile covers 4 square feet. You will need 24.75 tiles to cover the area.
20" = 2.78 square feet. Now divide the area of the tiles into the area of the room. 140/2.78 = 51 tiles
You will need at least 66,828 1/4 tiles to cover that area.
Each tile covers 81 square inches. You have 1,296 square inches to cover. It will take 16 tiles to cover that area.
Tiles that are two feet on a side cover 4 square feet. 378 of them cover 1512 square feet.
Multiply the two dimensions to get the area. The calculation will give you 4 square feet for each tile and 100 square feet for 25 tiles.
These 327 tiles will cover an area of 383.8 square feet.
You would need 29 tiles of that size to cover that area (28.77 tiles) to be precise,
Assuming you mean 16x16 inches tiles... 441 tiles would cover the area exactly
You will need 44 six inch tiles to cover 11 square feet.
192 tiles
It is necessary to know the area of the kitchen An area is measured in square feet and no such information is provided in the question.