18 what cms or inches?? Probably inches so,
Inches:
115.555556 tiles so about 116 tiles needed
1,440 square feet or 160 square yards.
1728
122.2 square yards.
The room is 11 x 14 = 154 square feet. So, you need 154 square feet of carpet.
To calculate the number of yards needed to cover a 13x20 room, first find the area in square feet: 13 feet x 20 feet = 260 square feet. Since there are 9 square feet in a square yard, divide 260 by 9, which equals approximately 28.89 square yards. Therefore, you would need about 29 square yards of material to cover the room.
20
12...
13.333 square yards.
it will cover a 12x12 room
180 I guess
13-ft x 16-ft = 208 square feet
640