To determine how many 19.5x19.5 inch tiles are needed to cover 350 square feet, first convert the tile dimensions to square feet. Each tile is approximately 2.7 square feet (19.5 inches = 1.625 feet, so 1.625 x 1.625 = 2.640625 sq ft). Divide 350 sq ft by 2.640625 sq ft per tile, which equals about 132.5 tiles. Therefore, you would need 133 tiles to cover the area, accounting for any cuts or waste.
113 tiles
55 tiles
18 10x10-inch tiles.
125 16-inch tiles.
297 16x16-inch tiles.
113 tiles
56 tiles to cover 224 square feet.
55 tiles
297 16x16-inch tiles.
18 10x10-inch tiles.
125 16-inch tiles.
236 18-inch tiles.
It would be 9 tiles wide by 12 tiles long. That gives you a total of 108 tiles.
1296 Tiles
270 tiles exactly.
Depends on the size of the tiles.
You will need 44 six inch tiles to cover 11 square feet.