The circumradius of an equilateral triangle whose side is 6 cm is ____ (in cm)

2 \sqrt{3}

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3 \sqrt{3}

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4 \sqrt{3}

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5 \sqrt{3}

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Solution

The correct option is A $2 \sqrt{3}$
Circumradius of an equilateral triangle of side $a$ is givewn by $\frac{a}{\sqrt{3}}$
So, circumradius of the given equilateral triangle is $\frac{6}{\sqrt{3}} = 2 \sqrt{3} c m$

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