Square Root of 20

What is the square root of 20?

Answer: 20 = 4.472135955
The square root of 20 is 4.472135955.
20 is not a perfect square. The square root is an irrational number.

Verification

√20 = 4.472135955

4.472135955 × 4.472135955 ≈ 20

See Also

Square Root Table

NumberSquare RootPerfect Square
2.236068No
2.44949No
2.645751No
2.828427No
3Yes
3.162278No
3.316625No
3.464102No
3.605551No
3.741657No
3.872983No
4Yes
4.123106No
4.242641No
4.358899No
4.472136No
4.582576No
4.690416No
4.795832No
4.898979No
5Yes
5.09902No
5.196152No
5.291503No
5.385165No
5.477226No
5.567764No
5.656854No
5.744563No
5.830952No

About "Square Root Calculator" Calculator

This calculator will help you find the square root of any number. For example, it can help you find out what is the square root of 20? (The answer is: 4.472135955). Enter a number (e.g. '20') and hit the 'Calculate' button.

FAQ

What is the square root of 20?

√20 = 4.472135955

Is 20 a perfect square?

No, 20 is not a perfect square because its square root is 4.472135955