Q: Is square root of 19 a rational number?

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No

The square root of 19 is approximately 4.36

19 squared is 361 but the square root of 19 is an irrational number and it is about 4.359 rounded to 3 decimal places

No negative number can have a real square root.In math and engineering, the symbol ' i ' is used to representthe square root of -1 .Then the square root of -19 can be written as 4.3589 i (rounded).

Yes

Related questions

The square root of the prime number 19 is an irrational number

No. 19 is a prime number, and all prime numbers have irrational roots.

No

No

A square root is considered a rational number if the number inside the square root sign is a perfect square. In other words, if the square root of a number results in a whole number, then it is a rational number. For example, the square root of 9 is 3, which is a whole number, making it a rational number. However, if the square root results in a non-terminating, non-repeating decimal, then it is considered an irrational number.

The square root of 19 is approximately 4.36

19 squared is 361 but the square root of 19 is an irrational number and it is about 4.359 rounded to 3 decimal places

No negative number can have a real square root.In math and engineering, the symbol ' i ' is used to representthe square root of -1 .Then the square root of -19 can be written as 4.3589 i (rounded).

No.

Yes

Square root of 19 is 4.36

No because 19 is a whole number which means that it is a rational number