1.8
297 16x16-inch tiles.
141
125 16-inch tiles.
90 tiles.
1121/2 16x16-inch tiles.
First I would convert 16x16 inch tiles in feet 16x16 inch tiles = 1.25x1.25 feet tiles To calculate the square feet that one tile takes up multiply 1.25 x 1.25 1.25 x 1.25 = 1.5625 sq feet Now calculate 190/1.5625 to find the number of tiles that can fit in 190 square feet 190/1.5625 = 121.6 You will need 121-122 square tiles
150 16x16" tiles; you'll have a small part of one tile left over.
16X16=256 inches 12X12=144 inches=1 Square Foot 126X144=18144 18144/256=79 79 16X16 tiles
Well, darling, if each tile is 16x16 square feet, then you just need to divide the total area (150 square feet) by the area of one tile (16x16 square feet) to get your answer. So, 150 divided by 16x16 equals about 5.86 tiles. But since you can't have a fraction of a tile, you'll need to round up to 6 tiles to cover that 150 square feet.
Each 16 inch tile is 1.78 square feet. You would need 169 tiles, plus some for spoilage.
16 inch x 16 inch = 16x16/144 = 1.777777.... sq.ft. 450/1.777777..... = 253.125 tiles (not counting any wastage caused by cutting, breakage, etc) = 254 tiles minimum.
It is not clear what is meant by an "18x18 square feet" tile. 18ft * 18 ft = 324 square feet, so that one tile will be more than enough. An 18 inch by 18 inch tile cannot be a 18x18 square feet tile.