Question
Identify the following as rational or irrational numbers. Give the decimal representation of rational numbers: $3\sqrt{18}$
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Answer
We have, $3\sqrt{18}$ $=3\times\sqrt{2}\times3\times3$ $=9\times\sqrt{2}$ Since, the product of a ratios and an irrational is an irrational number. $=9\times\sqrt{2}$ is an irrational. $=3\times\sqrt{18}$ is an irrational number.
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