Question
The value of $$\sqrt {0.000441} $$ is = ?
Answer: Option C
$$\eqalign{
& = \sqrt {0.000441} \cr
& = \sqrt {\frac{{441}}{{{{10}^6}}}} \cr
& = \frac{{\sqrt {441} }}{{\sqrt {{{10}^6}} }} \cr
& = \frac{{21}}{{{{10}^3}}} \cr
& = \frac{{21}}{{1000}} \cr
& = 0.021 \cr} $$
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$$\eqalign{
& = \sqrt {0.000441} \cr
& = \sqrt {\frac{{441}}{{{{10}^6}}}} \cr
& = \frac{{\sqrt {441} }}{{\sqrt {{{10}^6}} }} \cr
& = \frac{{21}}{{{{10}^3}}} \cr
& = \frac{{21}}{{1000}} \cr
& = 0.021 \cr} $$
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