4.69
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21.91
No, in fact unless an integer has an integral square root, the square root is always irrational. Note that some rational fractions can have rational square roots, though. Example: sqrt(4/9) = sqrt(4)/sqrt(9) = 2/3, which is rational. Or sqrt(9/16) = 3/4
√479 ≈ 21.89 √500 ≈ 22.36 Making 22 as the integer between them.
To the nearest whole number, 23
The value: 22,080 is already rounded to its nearest 10. It's nearest 100 would be 22, 100 and it's nearest thousand would be 22, 000