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Volume and Surface Area
An equilateral triangle ABC is inscribed in a circle of radius 20√3. What is the length of the side of the triangle?
30 cm
40 cm
50 cm
60 cm
Correct Answer:
60 cm
Explanation:
Radius of circumcircle of an equilateral triangle = side /√3
R = a/√3
a = R√3 = 20√3 *√3 = 60cm
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