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Not possible because the unit of room measure is missing.
However, if one assumes (no old jokes please) that the room measurement is referring to feet, as is typically standard in America, one would calculate:
(11 ft * 12 in per ft ) * (12 ft * 12 in per ft) = 19008 in²
18 in * 18 in = 324 in²
19008 in² / 324 in² = 58.666
This means you would need at least fifty-nine (59) 18*18 in tiles to cover the 11*12 ft room.
What else can I help you with?
How many 18inch tiles to cover a 18 sq ft room?
As a 18 sq ft room has area equal to 18*144=2592 sq inches, you need 2592/(18*18)=8 18 inch tiles.
How many 4 inch and times 4 inch ceramic tiles would it take to cover a 120 square foot area?
1,080 tiles exactly.
How many 10x8 inch tiles would you need to do 27 linear feet?
A minimum of 33 tiles, a maximum of 40.
How many 24 inch tiles are in 3500 square feet?
875 24-inch tiles.
How many 18inch by18 inch pavers would you need for a patio 10 foot by 12 foot?
53 and 1/3 paving slabs exactly.
How many 18inch by 18inch tiles are needed to do 304 square feet?
You will need a minimum of 136 18" x 18" tiles but buy a few extra to account for breakage, etc.
How many 18inch tiles to cover a 18 sq ft room?
As a 18 sq ft room has area equal to 18*144=2592 sq inches, you need 2592/(18*18)=8 18 inch tiles.
If a room is 6 feet by 9 feet how many 6 inch by 6 inch tiles would fit in the room?
12 tiles by 18 tiles or 216 tiles total
How many 6x20 inch tiles to cover 144 sq ft?
You would need 173 tiles (you would have fractions of tiles left over)
How many 8 inch by 8 inch tiles needed to cover 6 feet by 8 feet?
It would be 9 tiles wide by 12 tiles long. That gives you a total of 108 tiles.
How many 4 inch and times 4 inch ceramic tiles would it take to cover a 120 square foot area?
1,080 tiles exactly.
How many 12 inch tiles would you need for a room 18 feet x 20 feet?
360 tiles.
How many 10x8 inch tiles would you need to do 27 linear feet?
A minimum of 33 tiles, a maximum of 40.
How many 16 inch tiles in 400 square feet?
225 16-inch tiles.
How many 24 inch tiles are in 3500 square feet?
875 24-inch tiles.
How many 18inch by18 inch pavers would you need for a patio 10 foot by 12 foot?
53 and 1/3 paving slabs exactly.
How many 4 inch by 4 inch tiles can you fit into 6 square feet?
54 4x4-inch tiles.
