288, if there is no waste.
If the tiles are 1 foot squares, it will take 1,650 of them to cover 1,650 square feet. If the tiles are 16 inch square (1-1/3 square feet, each), then it would take 1,238 tiles.
15
48-50 tiles
1,080 tiles exactly.
157 18 by 18 tiles are needed to cover 352 square feet.
You would need a total of 92 tiles. It would take just over 91 tiles to cover the area given.
500/1.78 = 281 tiles
If the tiles are 1 foot squares, it will take 1,650 of them to cover 1,650 square feet. If the tiles are 16 inch square (1-1/3 square feet, each), then it would take 1,238 tiles.
15
1296 Tiles
48-50 tiles
comes out to about 126 tiles, but would get 140 depending on amount of cuts there are and can always take the extras back.
1,080 tiles exactly.
If that is 60" tiles it would take 16 total.
157 18 by 18 tiles are needed to cover 352 square feet.
It would take a minimum of 938 16"x24" tiles to cover 2500 square feet. Since not all of every tile is used, and since some tiles will break, figure on ordering 1,032 tiles, that is, 10% extra.
192 tiles