√645
= 85
= 32768
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The 5th root of 64 = 2.297397
The square root of 64 is 8 and you can work it out using the square root algorithm.
The square root of any number between 64 and 81.The square root of any number between 64 and 81.The square root of any number between 64 and 81.The square root of any number between 64 and 81.
0.1094
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.