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sqrt(4/9) = 2/3 = 0.666...

Which is NOT irrational .

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lenpollock

Lvl 16
6mo ago
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lenpollock

Lvl 1
6mo ago
Casually irrational numbers are those where the decimals go infinity , as in this case, BUT there is no regular order in the decimal digits.
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Wiki User

13y ago

The square of the fraction 4/9 is a rational number, either + 2/3 or -2/3

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Q: Is the square root of 4 over 9 irrational?
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Is the square root of 4.1 a rational or irrational number?

[ square root of (4.1) ] is irrational. But [ square root of (4) ] is rational.


Is one over sixteen an irrational square root?

One over sixteen = 1/16, which is a rational number (not irrational). The square root of 1/16 = 1/4 (or -1/4), which is also a rational, so the answer is No.


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Sometimes it is and sometimes it isn't. The square root of 2 and the square root of 3 are both irrational, as is their product, the square root of 6. The square root of 2 and the square root of 8 are both irrational, but their product, the square root of 16, is rational (in fact, it equals 4).


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