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If the square root of a natural number is not an integer, then it is irrational. Another way to look at it: if a natural number N falls between two perfect squares, then the square root of N is irrational.

So in this case, 12 is between 9 (3 squared) and 16 (4 squared). So the square root of 12 is between 3 and 4, and also the square root of 12 is irrational.

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โˆ™ 2011-05-04 15:50:45
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โˆ™ 2020-09-08 13:31:59


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Q: Is the square root of 12 a rational number or irrational number?
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