Answer and explanation

Correct answer: C. 0.08

  1. Step 1: Write 0.0064 as a fraction: 64 / 10,000. Step 2. Take the square root of numerator and denominator: √64 / √10,000 = 8 / 100 = 0.08. Answer: 0.08. Why not the others: 0.8 squared is 0.64; 0.008 squared is 0.000064; 0.0008 squared is 0.00000064.

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