I hope you meant 20 inch by 20 inch tiles, but the answer is around 13.38
647
Nine square feet is equal to 3.24 20-inch tiles.
20 inches = 1.666 feet 1.66x 1.666 = 2.777 sq feet 78/2.777 = 28 tiles
To calculate the number of 24x24 tiles needed for an 8x10 room, first find the area of the room: 8 feet x 10 feet = 80 square feet. Next, calculate the area of one tile: 2 feet x 2 feet = 4 square feet. Finally, divide the area of the room by the area of one tile: 80 square feet ÷ 4 square feet per tile = 20 tiles. You would need 20 tiles to cover the 8x10 room.
20" = 2.78 square feet. Now divide the area of the tiles into the area of the room. 140/2.78 = 51 tiles
240 square tiles are needed
647
1120 plus 10% for salvage= roughly1230tiles. you can probably return unused tiles
360 tiles.
Nine square feet is equal to 3.24 20-inch tiles.
20 inches = 1.666 feet 1.66x 1.666 = 2.777 sq feet 78/2.777 = 28 tiles
To calculate the number of 24x24 tiles needed for an 8x10 room, first find the area of the room: 8 feet x 10 feet = 80 square feet. Next, calculate the area of one tile: 2 feet x 2 feet = 4 square feet. Finally, divide the area of the room by the area of one tile: 80 square feet ÷ 4 square feet per tile = 20 tiles. You would need 20 tiles to cover the 8x10 room.
20" = 2.78 square feet. Now divide the area of the tiles into the area of the room. 140/2.78 = 51 tiles
Two tiles will suffice since they will cover 36 square feet.
There are 4 6X6 tiles per sq foot. So looks like 4 tiles X 5 Feet=20 tiles.
20
7.35 Is what you need