Let us look at a tile. It is 12 inches by 12 inches. There are 12 inches in a foot. So each tile is one square foot. That would mean 110 square feet.
190
It will require a minimum of 1,462 tiles. That number will cover about 1,850.34 square feet.
90 tiles.
start with 38 tiles.
Each tile covers 4 square feet. Which means you need 200 tiles to cover 800 square feet, plus spoilage.
10
Tiles that are two feet on a side cover 4 square feet. 378 of them cover 1512 square feet.
1.722 ceramic tiles
192 tiles
Two tiles will suffice since they will cover 36 square feet.
Each tile covers 4 square feet. You will need 24.75 tiles to cover the area.
76.6 tiles
67 tiles.
190
If the 6x12 tiles are in inches, it will take two of them to cover a square foot. You will need 210 of them.
It will require a minimum of 1,462 tiles. That number will cover about 1,850.34 square feet.
You will need at least 67 tiles. This will cover 150.75 square feet.