A) \[3{{b}^{2}}\left( \pi +\sqrt{3} \right)\]
B) \[3\sqrt{3}{{b}^{2}}\]
C) \[3\left( {{b}^{2}}\sqrt{3}+\pi \right)\]
D) \[\frac{3\sqrt{3}\pi {{b}^{2}}}{2}\]
Correct Answer: B
Solution :
(b): There will be 12 equilateral \[\Delta les\]in total \[\therefore \] Area \[=12\times \frac{\sqrt{3}}{4}\times {{b}^{2}}\]
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