As a 18 sq ft room has area equal to 18*144=2592 sq inches, you need 2592/(18*18)=8 18 inch tiles.
The answer will depend on the size of the tiles. Since there are no units given, the fact that the tiles are 18*18 is useless for answering the question.
18*18 = 324 tiles.
157 18 by 18 tiles are needed to cover 352 square feet.
Assuming you mean 18 inch by 18 inch, you will need 133 and 1/3 tiles.
As a 18 sq ft room has area equal to 18*144=2592 sq inches, you need 2592/(18*18)=8 18 inch tiles.
The answer will depend on the size of the tiles. Since there are no units given, the fact that the tiles are 18*18 is useless for answering the question.
18
18*18 = 324 tiles.
157 18 by 18 tiles are needed to cover 352 square feet.
It depends on the units used for measuring the tiles. Obviously, the number of 18 inch x 18 inch tiles required will not be the same as 18 cm x 18 cm tiles. And if there were 18 yard x 18 yard tiles, you would need only 1.
236 18-inch tiles.
18*18 is 324in2. This is 0.25 square yards. So you need 4 tiles
110 tiles
It depends on the units used for 18 by 18. For example, two tiles of 18 ft x 18 ft will be enough. On the other hand, you will need just over 1000 tiles measuring 18 cm x 18 cm.
Assuming you mean 18 inch by 18 inch, you will need 133 and 1/3 tiles.
Assuming all measurements are in the same units, divide 120 / 18 to get the amount of tiles for the width, and 180 / 18 to get the number of tiles for the length. You may need to round up, or down, or break some tiles apart.