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What is the square root of 64?

  1. 4

  2. 6

  3. 8

  4. 16

The correct answer is: 8

The square root of a number is a value that, when multiplied by itself, gives the original number. In this case, the square root of 64 is 8, because 8 multiplied by itself equals 64. The incorrect options are based on incorrect calculations or misunderstanding of the concept of square roots. Option A, 4, is the square root of 16, not 64. Option B, 6, is close but not correct as 6 multiplied by itself is equal to 36, not 64. Option D, 16, is the square root of 256, not 64. Therefore, the only correct option is C, 8.