A 24x24 inch tile would be four square feet. 140 divided by 4 would be 35 tiles.
You would need a total of 36 tiles to cover that area.
24x24 inch tile equals 4 square feet 275/4 = 68.75 You would need 69. (24x24 inch tiles to cover 275 sqft)
81 tiles squared because if it's a square then it would be 9x9 which is 81
A 24x24 tile is 4 square feet. You would need 105 of them.
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.
You will need at least 66,828 1/4 tiles to cover that area.