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September 20, 2014

September 20, 2014

Posted by **ivette hanon** on Thursday, May 19, 2011 at 8:04am.

- geometry -
**MathMate**, Thursday, May 19, 2011 at 9:34amYou have not described the figure included with the question, I assume x is the radius of the inscribed circle.

Hint:

The radius of the inscribed circle of an equilateral triangle is one-third of the height of the triangle.

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