1 foot = 12 inches
Answer = 265/12 x 18/12 = 33.125 sq feet = 34 sq feet tiles
About 197 (196.875) 16" x 16" tiles will feet in that area.
You would need 138 tiles to cover 115 square feet with 12-inch tiles. To calculate this, divide the total square footage (115) by the area of one tile (1 square foot for a 12-inch tile). So, 115 (sq ft) / 1 (sq ft per tile) = 115 tiles.
It takes 4 6x6 inch tiles to cover a square foot. You will need 180 tiles, plus some for spoilage and mistakes.
A 12 by 12 inch tile is one square foot. That means it will take 650 tiles, plus spoilage and trim.
A 3 inch by 6 inch tile covers 18 square inches which converts to 0.125 square feet. 35 square feet divided by 0.125 square feet is 280 tiles. This does not take into the consideration the area taken up by grout between the tiles and putty at the ends so it will probably be less than 280 tiles. But unless the area to be covered exactly matches a layout of the tiles, some tiles will have to be cut to fit against the edges. Some will break or be miscut so you should probably get about 300 tiles. You can keep the extra in case some break accidentally or most stores will accept return of the unused tiles.
875 24-inch tiles.
225 16-inch tiles.
5,184 2-square-inch tiles are needed.
297 16x16-inch tiles.
18 10x10-inch tiles.
125 16-inch tiles.
236 18-inch tiles.
113 tiles
You'll need 200 18-inch tiles.
54 4x4-inch tiles.
61 whole tiles represent 1421/3 square feet 144 square feet works out to 61.714 tiles (rounded)
864 tiles.144 tiles per square foot.