A 13 x 13 tile is 1.74 sq ft. 144/1.74 = 123 tiles
144
5,184 2-square-inch tiles are needed.
-3.5
Without any waste you would need 25 tiles.
18 X 19 = 342 Square Feet. There are thirty six 2 X 2 tiles in a Square Foot. 342 X 36 = 12312
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.
Without any waste you would need 25 tiles.
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.