144
5,184 2-square-inch tiles are needed.
-3.5
18 X 19 = 342 Square Feet. There are thirty six 2 X 2 tiles in a Square Foot. 342 X 36 = 12312
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.
144
35
Scrabble tiles are 0.75 inch × 0.75 inch square. Therefore, one square foot of Scrabble tiles will include 256 tiles in a square of 16 X 16 tiles.
144 assuming no waste.
Floor area = 12 ft x 18 ft = 216 square feet. There are 4 six-inch square tiles needed for each square foot, so 864 tiles are needed.
41
5,184 2-square-inch tiles are needed.
-3.5
236 18-inch tiles.
864 tiles.144 tiles per square foot.
One square foot is 12 inches by 12 inches so you can fit in it 9 tiles in a 3 tiles by 3 tiles square.
22.2 tiles so buy 23 tiles.