A) 1 cm
B) \[\sqrt{3}\]cm
C) 2 cm
D) \[2\sqrt{3}\]cm
Correct Answer: C
Solution :
\[a=b=c=2\sqrt{3}\] \[\Delta =\left( \frac{\sqrt{3}{{a}^{2}}}{4} \right)=3\sqrt{3}sq.\,cm,\,\text{ }\therefore \,R=\frac{abc}{4\Delta }=2cm\].
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