380 / (1.5)2 = 168.89 so at least 169 tiles, maybe more for cutting to fit.
297 16x16-inch tiles.
125 16-inch tiles.
You'll need 200 18-inch tiles.
55 tiles
You will need at least 67 tiles. This will cover 150.75 square feet.
If these are one inch tiles you need 2160. If the tiles are 12 inch tiles you need 180.
297 16x16-inch tiles.
125 16-inch tiles.
You'll need 200 18-inch tiles.
61 whole tiles represent 1421/3 square feet 144 square feet works out to 61.714 tiles (rounded)
55 tiles
69
You will need at least 67 tiles. This will cover 150.75 square feet.
You will need 44 six inch tiles to cover 11 square feet.
You will need 47 tiles.
7.35 Is what you need
141