Question
If `sqrt(.04 xx .4 xx a)` = .004 x .4 x `sqrt(b)`, then `a/b` is :
Answer: Option C
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`sqrt(a)/sqrt(b)` = `(.004xx4)/(sqrt(.04xx4))` `hArr` `a/b` = ` (.004xx.4xx.004xx.4)/(.04xx.4)` = `.0000064/.04`
`:.` `a/b` = ` .00064/4` = .00016 = `16/10^5` = 16 x `10^-5`
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