No because it is 2 times the square root of 21 which is an irrational numberThe square root of 84 is not a rational number
The square roots of 21 are 4.5826 (rounded) and the negative of the same number.
Yes because 21 is a rational number
irrational
Yes. The square root of a natural number (positive integer) is either an integer, or an irrational number.
No. The square root of an integer is either an integer, or an irrational number.
No because it is 2 times the square root of 21 which is an irrational numberThe square root of 84 is not a rational number
The square root of 21 is 4.58257569495584.
The square roots of 21 are 4.5826 (rounded) and the negative of the same number.
It is: 2 times the square root of 21 and it's an irrational number
If the reverse square root of the reverse of square of a number is the number itself then it is Adam Number. For ex., 12 and 21 Take 12 square of 12 = 144 reverse of square of 12 = 441 square root of the reverse of square of 12 = 21 The reverse square root of the reverse of square of 12 = 12, then number itself. Such number is called Adam Number. cool....................
The square root of 21 is 4.58257569495584.
Yes because 21 is a rational number
irrational
Yes. The square root of a natural number (positive integer) is either an integer, or an irrational number.
the square root of 21
4.6 is a better approximation to the square root of 21.