Question
$$\sqrt {\frac{{0.081 \times 0.484}}{{0.0064 \times 6.25}}} {\text{ }}$$ is equal to ?
Answer: Option B
Sum of decimal places in the numerator and denominator under the radical sign being the same, we remove the decimal.
∴ Given expression,
$$\eqalign{
& = \sqrt {\frac{{0.081 \times 0.484}}{{0.0064 \times 6.25}}} \cr
& = \sqrt {\frac{{81 \times 484}}{{64 \times 625}}} \cr
& = \frac{{9 \times 22}}{{8 \times 25}} \cr
& = 0.99 \cr} $$
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Sum of decimal places in the numerator and denominator under the radical sign being the same, we remove the decimal.
∴ Given expression,
$$\eqalign{
& = \sqrt {\frac{{0.081 \times 0.484}}{{0.0064 \times 6.25}}} \cr
& = \sqrt {\frac{{81 \times 484}}{{64 \times 625}}} \cr
& = \frac{{9 \times 22}}{{8 \times 25}} \cr
& = 0.99 \cr} $$
Was this answer helpful ?
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