Discussion
What is the value of \(\sqrt{0.000441}\)?
Answer: B
Count the decimal places: a square root halves them.
\[ 0.000441 = \frac{441}{10^{6}} \]
\[ \sqrt{0.000441} = \frac{\sqrt{441}}{10^{3}} = \frac{21}{1000} = 0.021 \]
Six decimal places become three, which is what separates 0.021 from 0.21.
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