convert inches to feet- 1.5- then divide into 800- 533.333333333333~
round up, and you need AT LEAST 534 tiles..
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I do not think that the answer above is correct.
18" by 18" tiles measure 1.5 x 1.5 sq ft = 2.25 sq ft
Then 800 divided by 2.25 = 355.55...(the 5 is recurring) sq ft, so the sensible answer is 356 tiles, but a few more should be added to allow for breakages
First, convert the tile size from inches to square feet: an 18x18 inch tile is 1.5x1.5 feet, giving it an area of 2.25 square feet. To find out how many tiles are needed for 900 square feet, divide 900 by 2.25, which equals 400. Therefore, you will need 400 tiles to cover 900 square feet.
You would need 450 tiles
178 tiles
256 tiles
You would need a total of 89 tiles (88.88 tiles exactly) with those measurements to cover that area.
It depends on the size of the tiles and also, to some extent, on the shape of the area that you need to cover.
30 tiles! But you'll need more than 30 tiles to cover wastage, breakage, etc.
You would need a total of 36 tiles to cover that area.
You will need at least 67 tiles. This will cover 150.75 square feet.
you need a total of 507 tiles to cover this square footage area
350.
52 tiles (with a bit left over !)