Identify the Following as Rational Or Irrational Number. Give the Decimal Representation of Rational Number: 3sqrt18 - Mathematics

Identify the following as rational or irrational number. Give the decimal representation of rational number:

3sqrt18

Solution

Given number is 3sqrt18

rArr3sqrt18=3sqrt(3xx3xx2)

rArr3sqrt18=3xx3sqrt2

rArr3sqrt18=9sqrt2

So it is an irrational number

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APPEARS IN

RD Sharma Mathematics for Class 9
Chapter 1 Number Systems
Exercise 1.4 | Q 4.2 | Page 31