12 " x 12 " = 1 foot by 1 foot = 1 sq foot. 900 / 1 = 900 tiles are needed (plus waste).
A 900 sq foot area will have a 30 ft side (Sqrt(900)=30) So given that 16 inches = 1.333 feet # tiles on edge = 30/1.333 = 22.5 22.5^2 = 507 tiles
18 inch x 18 inch tile is really (1 and 1/2) feet by (1 and 1/2) feet That is (3/2) x(3/2) square feet = 9/4 square feet. To cover 900 square feet we need (900)/(9/4) = (900) x (4/9) = 100 x 4 = 400 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.
18"x18"/144 sq inches per sq ft = 2.25 sq ft per tile for 18x18 tiles 900 sq ft / 2.25 sqft/tile = 400 tiles +10% for waste and cuts = 440 tiles
12 " x 12 " = 1 foot by 1 foot = 1 sq foot. 900 / 1 = 900 tiles are needed (plus waste).
75, 6.25 12 x 12 ft tiles to cover surface of 900 ft2
A 900 sq foot area will have a 30 ft side (Sqrt(900)=30) So given that 16 inches = 1.333 feet # tiles on edge = 30/1.333 = 22.5 22.5^2 = 507 tiles
18 inch x 18 inch tile is really (1 and 1/2) feet by (1 and 1/2) feet That is (3/2) x(3/2) square feet = 9/4 square feet. To cover 900 square feet we need (900)/(9/4) = (900) x (4/9) = 100 x 4 = 400 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.
18"x18"/144 sq inches per sq ft = 2.25 sq ft per tile for 18x18 tiles 900 sq ft / 2.25 sqft/tile = 400 tiles +10% for waste and cuts = 440 tiles
Area of each tile = 30*30 = 900 mm2. Area to be covered = 1000*1000 = 1,000,000 mm2 So, number of tiles required = 1,000,000/900 = 1111.11... tiles.
If it is a 4inch by 4inch (1/3foot by 1/3foot)tile and it covers a 10ft by 10ft area then it will take 900 of these tiles to cover the whole floor. If you walk ten feet on a edge of this floor then you will have to place 30 tiles along this edge. Since the area is a square area then to find the amount of tiles just multiply 30 by 30 to get 900tiles.
Volume = 900 sqft * 1/12 ft = 75 cubic feet.
If you're using 30cm x 30cm tile then it cover 900 cm area using 1 tile and your area is 12m x 12m=144m x 100 = 14400cm. Now 14400cm / 900cm = 16.You need 16 pcs of 30cm x 30cm tiles.
Total number of tiles: 12*15*4 = 720 Total cost: 720 * 1.25 = 900
900 of them.