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Classify the following numbers as rational or irrational: (ii) square root 225

9. Classify the following numbers as rational or irrational :

(ii)      \sqrt{225}   

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We can rewrite  \sqrt{225}  as

\Rightarrow \sqrt{225} = 15
We can clearly see that it is a rational number because we can represent it in  \frac{p}{q}  form 

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