Question
$$\sqrt {\frac{{0.0196}}{?}} = 0.2$$
Answer: Option A
$$\eqalign{
& {\text{Let ,}} \cr
& \sqrt {\frac{{0.0196}}{x}} = 0.2 \cr
& {\text{Then,}} \cr
& \Leftrightarrow \frac{{0.0196}}{x} = 0.04 \cr
& \Leftrightarrow x = \frac{{0.0196}}{{0.04}} \cr
& \Leftrightarrow x = \frac{{1.96}}{4} \cr
& \Leftrightarrow x = 0.49 \cr} $$
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$$\eqalign{
& {\text{Let ,}} \cr
& \sqrt {\frac{{0.0196}}{x}} = 0.2 \cr
& {\text{Then,}} \cr
& \Leftrightarrow \frac{{0.0196}}{x} = 0.04 \cr
& \Leftrightarrow x = \frac{{0.0196}}{{0.04}} \cr
& \Leftrightarrow x = \frac{{1.96}}{4} \cr
& \Leftrightarrow x = 0.49 \cr} $$
Was this answer helpful ?
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