No, 18 is not a square number
4.242640687It's the square root of 18
18 square feet is an area, and half of 18 = 9 is a number. You can't compare numbers with areas (or any measurement with units).
It is a square number but not a perfect square. The nearest perfect squares, on either side, are 4^2 = 16 and 5^2 = 25. Since there is no integer between 4 and 5 and the square is a strictly monotonic function, 18 cannot be a perfect square.
306
No, 18 is not a square number
A square number because 18*18 = 324
The square root of 18 is an irrational number because it cannot be expressed as a fraction.
no
It is neither because the square root of -18 is an imaginary number but the square root of 18 is irrational
182= 324 square root 18= 4.242640687... 1 and 9 are square numbers that are factors of 18.
18 is a factor of 36. 36 is a square. 18 is not.
The square root of 18 is: ± 4.242641
4.242640687It's the square root of 18
False
Yes
It is 2 times 18 = 36 which is a perfect square number because 6 time 6 = 36