$\"\"$

The expression is $\"\"$ .

The square root of $\"\"$ is not a perfect square and

the decimal ( $\"\"$ ) of the number is not repeating, so

the number $\"\"$ is an irrational number (I).

$\"\"$

Observe the Venn diagram:

$\"\"$ All irrational numbers (I) are real numbers (R). \ \

$\"\"$

The number $\"\"$ belongs to I, and R.