42 is 16, less than 20
52 is 25, more than 20.
so, 20 is not a perfect square, and does not have an integral square root.
But, the square root of any integer is either an integer itself, or irrational.
So, square root 20 is irrational
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Try taking the square root. The square root of a positive integer can only be: * A whole number, in which case it is of course rational, or * Irrational.
It is a rational number.
To find 20 times the square root of 3, you simply multiply 20 by the value of the square root of 3. The square root of 3 is an irrational number approximately equal to 1.732. Multiplying 20 by 1.732 gives you approximately 34.64. So, 20 times the square root of 3 is approximately 34.64.
20 is not the square of an integer, the square root of 20 is approximately equal to 4.472.
The square root of 20 is approximately 4.47, while the square root of 10 is approximately 3.16. Therefore, the square root of 20 is greater than the square root of 10. This can be confirmed by squaring both values to see which results in a larger number.