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A circle is inscribed in an equilateral triangle, such...

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by BTGmoderatorLU » Sun Dec 17, 2017 11:42 am
A circle is inscribed in an equilateral triangle, such that the two figures touch at exactly three 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

The OA is C.

I'm really confused with this PS question. Please, can any expert assist me with it? Thanks in advanced.
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Source: — Problem Solving |