$$\sqrt {\frac{{0.0196}}{?}} = 0.2$$
A. 0.49
B. 0.7
C. 4.9
D. None of these
Answer: Option A
Solution (By Examveda Team)
$$\eqalign{ & {\text{Let ,}} \cr & \sqrt {\frac{{0.0196}}{x}} = 0.2 \cr & {\text{Then,}} \cr & \Leftrightarrow \frac{{0.0196}}{x} = 0.04 \cr & \Leftrightarrow x = \frac{{0.0196}}{{0.04}} \cr & \Leftrightarrow x = \frac{{1.96}}{4} \cr & \Leftrightarrow x = 0.49 \cr} $$This Question Belongs to Arithmetic Ability >> Square Root And Cube Root
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