Nine square feet is equal to 3.24 20-inch tiles.
247.1
A 12 inch by 12 inch tile is 1 ft by 1 ft, which is 1 square foot. So you would need 120 tiles.
A 24 inch tile x 24 inch is 2 ft by 2 ft = 4 square feet 648/4 = 162 tiles
20 inches = 20/12 ft = 1.67ft6 inches = 6/12 ft = 0.5ft1.67X0.5 ft = 0.83 sq ft.Therefore 900sq ft / 0.83 sq ft = 1080 tilesHowever the above answer is how much is needed without waste. I.e. no partial tiles for the perimeter.
Length (ft) x Width )ft) = Area (sq ft); 8 x 6 = 48 sq ft; Assuming the 6-inch tiles are square, then 4 tiles = 1 sq ft Multiply 48 sq ft x 4 tiles per sq ft to determine: 48 x 4 = 192 tiles
The number of tiles required will be different if they are 20 inch x 20 inch tiles rather than if they are 20 cm x 20 cm tiles. Also, the answer depends on whether the room is 12 foot by 8 ft or 12 metres x 8 metres. In the extreme case, you would need only a single 20 ft x 20 ft tile for a room that is 12 ft by 8 ft.
54
1120 plus 10% for salvage= roughly1230tiles. you can probably return unused tiles
247.1
A 12 inch by 12 inch tile is 1 ft by 1 ft, which is 1 square foot. So you would need 120 tiles.
A 24 inch tile x 24 inch is 2 ft by 2 ft = 4 square feet 648/4 = 162 tiles
20 inches = 20/12 ft = 1.67ft6 inches = 6/12 ft = 0.5ft1.67X0.5 ft = 0.83 sq ft.Therefore 900sq ft / 0.83 sq ft = 1080 tilesHowever the above answer is how much is needed without waste. I.e. no partial tiles for the perimeter.
You would need 173 tiles (you would have fractions of tiles left over)
36 tiles. First you have to convert 20 inches to feet. There are 12 inches in a foot so 20/12 means you have one and two-thirds length tiles. Then, you have to figure out the lenght of the sides of the room which is the square root of 100 sq ft. which is 10 feet long. Now, you have to figure out how many tiles it will take to do one length of the room by 10/one and two-thirds which is 6 tiles. Finally you have to multiply the length times the width to get how many tiles it takes to fill the room by 6*6=36 tiles
8 ft 6 in X 12 ft = 102 sq ft 102 sq ft X 4 tiles/sq ft = 408 tiles Get a few extra in case some crack. You may be glad later that you had a few replacement tiles.
Length (ft) x Width )ft) = Area (sq ft); 8 x 6 = 48 sq ft; Assuming the 6-inch tiles are square, then 4 tiles = 1 sq ft Multiply 48 sq ft x 4 tiles per sq ft to determine: 48 x 4 = 192 tiles
94 (93.33)