Yes, in so far as all numbers are squares (of some number). But it is not a perfect square.
An 18 * 18 square has an area of 324 square units.
There are 144 18 square inch tiles in an area of 18 square feet.
18 square is 324
No, 18 is not a square number
The square root of 18 is: ± 4.242641
The square root of 18 is about 4.24
18 square meters is about 21.53 square yards.
2 square yards = 18 square feet
18 m2 = 193.75 square feet.
18 square meters is the same as 193.75 square feet.
18 square feet is about 1.7 (1.67225) square meters.
18 square feet = 1.67 square meters.