what is the value of root 2

The value of the square root of 2, denoted as $$\sqrt{2}$$, is an irrational number and cannot be expressed as a fraction. It has an infinite number of decimal places and is approximately equal to 1.414. The exact value of $$\sqrt{2}$$ cannot be determined, but it is widely used in mathematics and other fields. The fraction 99/70 (approximately 1.4142857) is sometimes used as a good rational approximation with a reasonably small denominator.