Yes, the square root of 7 is an irrational number. Written in decimal form, it never terminates or repeats.
√7 is approximately 2.645751311064591
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The square root of 7 correct to nine decimal places is 2.645751311
7 is not the square of a perfect integer - the square root of 7, rounded to two decimal places, is 2.65.
Yes. The square root of 49 is 7, because 7 * 7 = 49. Seven does not have a decimal and is therefore a whole number.
The square root of 7 is an irrational number, so its decimal expansion never ends and never repeats. Rounded to 3 decimal places it is 2.646.
Expressed as a surd, the square root of 490 is equal to 7 root 10. Rounded to two decimal places, this is equal to 22.14.