Each 16 inch tile is 1.78 square feet. You would need 169 tiles, plus some for spoilage.
175
300 sq ft X 144 sq in/sq ft = 43200 sq in 43200 sq in /(16 in X 16 in) = 169 tiles That is true if the tiles fit exactly. If you have to cut some tiles because the length or width of the floor is not an exact multiple of 16 inches, then you may need more.
75 Get extra for breakage.
First we need to calculate the square footage of the room. 15*20 = 300 square feet Now we need to know how many square feet each tile covers. 20" = 1.667~ square feet 1.6672 = 2.78 square feet. Now we divide the area of the tiles into the area of the room. 300/2.78 = 108 tiles. This gives the exact number of tiles you need mathematically. Realistically you need to account for cutting and breaking. It's safe to round that up to 120 tiles.
Each 16 inch tile is 1.78 square feet. You would need 169 tiles, plus some for spoilage.
175
118
300 sq ft X 144 sq in/sq ft = 43200 sq in 43200 sq in /(16 in X 16 in) = 169 tiles That is true if the tiles fit exactly. If you have to cut some tiles because the length or width of the floor is not an exact multiple of 16 inches, then you may need more.
a 12 x 12 tile is 1 square foot. So, you would need 300 tiles to cover 300 square feet
75 Get extra for breakage.
First we need to calculate the square footage of the room. 15*20 = 300 square feet Now we need to know how many square feet each tile covers. 20" = 1.667~ square feet 1.6672 = 2.78 square feet. Now we divide the area of the tiles into the area of the room. 300/2.78 = 108 tiles. This gives the exact number of tiles you need mathematically. Realistically you need to account for cutting and breaking. It's safe to round that up to 120 tiles.
4800 tiles 3*3=9 (area of tiles) 12*12=144 (width in inches) 12*25=300 (length in inches) 144*300=43200 (area of room) 43200/9=4800 (area of room over area of tiles)
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?
Each 16-inch square tile covers 11/3 ft* 11/3 ft = 17/9 sq feet. Area to be covered = 15 ft * 20 ft = 300 sq feet. So, minimum number of tiles required = 300/(17/9) = 300*16/9 = 168.75 or 169 tiles. That is the mathematical answer. In real life, though, the answer will depend on the extent to which off cuts are reused. While 15 tiles will do the length, you will require 12 tiles to do the width, making a total of 180 tiles in all. 169 tiles will result in a part of the area being a mosaic of tiny pieces.
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?
300' x 300' = 90,000 square feet