If the area is "well behaved" or if most offcuts are used then 77 tiles will suffice. However, if the area is not rectangular then you are likely to require more. Also, unless the length or width of the rectangular area is an exact multiple of 19.5 inches, there will be many off-cuts.
If these are one inch tiles you need 2160. If the tiles are 12 inch tiles you need 180.
It takes 4 6x6 inch tiles to cover a square foot. You will need 180 tiles, plus some for spoilage and mistakes.
About 197 (196.875) 16" x 16" tiles will feet in that area.
A 12 by 12 inch tile is one square foot. That means it will take 650 tiles, plus spoilage and trim.
You will need approximately 23.4 tiles, so 24 tiles. Assuming 13x13 tiles is in inches.
113 tiles
55 tiles
56 tiles to cover 224 square feet.
1296 Tiles
Depends on the size of the tiles.
270 tiles exactly.
236 18-inch tiles.
297 16x16-inch tiles.
18 10x10-inch tiles.
125 16-inch tiles.
It would be 9 tiles wide by 12 tiles long. That gives you a total of 108 tiles.
You will need 44 six inch tiles to cover 11 square feet.