Irrational: √11 ≈ 3.3
Rational numbers are numbers that can be expressed as a fraction. Irrational numbers are decimals that are non-terminating and non-repeating, such as 4.56789... Irrational numbers include π and non-perfect squares such as √7 because when calculated, these numbers are decimals that have no end and no pattern of repetition. Since there is not a number we can multiply by itself (such as 5 x 5 = 25) to get 11, then it is a non-perfect square and thus, irrational. When you calculate √11 you get a non-terminating decimal: 3.316624... When we round the nearest tenths place, the answer is approximately 3.3.
C is correct
Rational number: A number in the form of division of two integers. where
Irrational number: A number can not write as division of two integers.
Therefore, is a irrational number.
Using calculator to find
Now round off to tenths place.
Rounded to the tenth: 3.3
Square roots that are not perfect squares are always irrational