A) 1 cm
B) \[\sqrt{3}cm\]
C) 2 cm
D) \[2\sqrt{3}cm\]
E) 4cm
Correct Answer: C
Solution :
\[R=\frac{a}{2\sin A}\] \[\Rightarrow \] \[R=\frac{2\sqrt{3}}{2\sin 60{}^\circ }=2\,cm\]
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