144/(1.5*1.5) = 64 tiles, but if you are using this to determine how many are needed to tile a room, you need to add at least 10% for edging around the room. So, you probably need at least 71 or more tiles.
The answer depends on the measurement units used for 18x18.
22.2 tiles so buy 23 tiles.
266.666666666 so rounding up 267 tiles.
100 tiles or 96 which is the correct amount
102.22 tiles because each tile is 2.25 sq.ft. 230 / 2.25 =102.22 so really 103 tiles.
You'll need 200 18-inch tiles.
It is not clear what is meant by an "18x18 square feet" tile. 18ft * 18 ft = 324 square feet, so that one tile will be more than enough. An 18 inch by 18 inch tile cannot be a 18x18 square feet tile.
18" x 18" = 1.5' x 1.5' = 2.25 square feet90/2.25 = 40 tiles.
The answer will depend on the units used for measuring the tiles which you have failed to specify.
6' x 9' (54 square feet) = 6 square yards of tiles needed.
That depends on the unit of measurement for the tiles. Assuming the tiles are 18 inches by 18 inches, one tile is 324 square inches = 2.25 square feet. Multiply by 106 to get 238.5 square feet. If the tiles are 18 feet by 18 feet (pretty big tiles, but hey, it could happen), one tile is 324 square feet, so 106 pieces of that would be 34344 square feet.
56 16x16" tiles are needed.
240 square tiles are needed
157 18 by 18 tiles are needed to cover 352 square feet.
The answer depends on the units used for 18x18.
18x18 what? 18 feet x 18 feet? 18 microns x 18 microns?
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.
It would take approximately 311 tiles plus 5% to 10% waste depending on how you lay your floor out and how many cuts you will have.
5,184 2-square-inch tiles are needed.
240 sq ft = 240x12x12 = 34560 sq inches Each tikle is 18 x 18 = 324 sq inches Thus you need 34560/324 = 107 tiles
Four tiles are needed.
if you are quoting inches, then a 18x18 tile measures 2.25 square feet. On that basis you would need 106.66 or 107 to the nearest.
If the tiles are 12 inches square... 8352 tiles ! However if they're 12 feet square... 58 tiles
324 square feet. Multiply the two dimensions - the result is the number of square feet.
75 square feet = 10,800 square inches divided by 18 = 600 tiles. Get extra for breakage.