A wire when bent in shape of an equilateral triangle encloses an area of \( 9 \sqrt{3} \mathrm{~...

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A wire when bent in shape of an equilateral triangle encloses an area of \( 9 \sqrt{3} \mathrm{~cm}^{2} \). If the same wire is bent to form a circle, then find the area of circle.
a. \( \frac{36}{\pi} \mathrm{cm}^{2} \)
b. \( \frac{72}{\pi} \mathrm{cm}^{2} \)
c. \( \frac{81}{\pi} \mathrm{cm}^{2} \)
d. \( \frac{21}{\pi} \mathrm{cm}^{2} \)
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