Question
$$\root 3 \of {\sqrt {0.000064} } = ?$$
Answer: Option B
$$\eqalign{
& = \sqrt {0.000064} \cr
& = \sqrt {\frac{{64}}{{{{10}^6}}}} \cr
& = \frac{8}{{{{10}^3}}} \cr
& = \frac{8}{{1000}} \cr
& = 0.008 \cr
& \therefore \root 3 \of {\sqrt {0.000064} } \cr
& = \root 3 \of {0.008} \cr
& = \root 3 \of {\frac{8}{{1000}}} \cr
& = \frac{2}{{10}} \cr
& = 0.2 \cr} $$
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$$\eqalign{
& = \sqrt {0.000064} \cr
& = \sqrt {\frac{{64}}{{{{10}^6}}}} \cr
& = \frac{8}{{{{10}^3}}} \cr
& = \frac{8}{{1000}} \cr
& = 0.008 \cr
& \therefore \root 3 \of {\sqrt {0.000064} } \cr
& = \root 3 \of {0.008} \cr
& = \root 3 \of {\frac{8}{{1000}}} \cr
& = \frac{2}{{10}} \cr
& = 0.2 \cr} $$
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