A circle is inscribed in an equilateral triangle, such that the two figures touch at exactly 3 points, one on each side

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C

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A circle is inscribed in an equilateral triangle, such that the two figures touch at exactly 3 points, one on each side of the triangle. Which of the following is closest to the percent of the area of the triangle that lies within the circle?

A 20
B 45
C 60
D 55
E 77

Answer: C

Source: Manhattan GMAT
Source: — Problem Solving |