A) \[\frac{a}{\sqrt{3}}\]
B) \[\frac{a\sqrt{3}}{4}\]
C) \[\frac{a\sqrt{3}}{2}\]
D) \[\frac{a}{\sqrt{2}}\]
Correct Answer: B
Solution :
\[2{{r}_{0}}+{{2}_{{{r}_{T}}}}\,=\,\,\frac{\sqrt{3}a}{2}\] \[{{r}_{0}}+{{r}_{0}}=\frac{\sqrt{3}a}{4}\]
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