#### Answer

Irrational number

#### Work Step by Step

$\sqrt{11}$ is equal to: 3.3166247...., which can not be represented by a fraction. The definition of an irrational number is a number that cannot be expressed as a ratio of two integers and is not an imaginary number. If written in decimal notation, an irrational number would have an infinite number of digits to the right of the decimal point, without repetition.