Rounded to five decimal places, sqrt(8) = ±2.82843
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The principle square root of 64 is ±8.8.* * * * *The square roots of 64 are +8 and -8.The PRINCIPAL square root is the positive root, +8.So, the answer to the question that was asked is +8 not ±8.
0.625
7.937253933slightly less than 8 (square root of 64 is 8)
Do you mean: What is the square root of (8 squared)? If so, there are two answers: 8 and -8. Or do you mean: What is the (square root of 8) squared? If so, there is only one answer: 8.
There is no "8 square root" of something. You can calculate the square root, or the 8th. root, of something.