An equilateral triangle of side 6 cm is inscribed in a circle. Then radius of the circle is _____.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 2√3 cm
Side of equilateral triangle = 6 cm
Median of equilateral triangle = √3/2 × 6 = 3√3 cm
Hence,
Radius of circle, AO = 2/3 × 3√3 = 2√3 cm