Question 315582
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Equilateral triangles do not have a radius.  A circle circumscribed about an equilateral triangle <i>does</i> have a radius however.  To the extent that is what you meant to say, that radius is related to the measure of the side of the triangle in the following fashion:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ a\ =\ R\sqrt{3}]


where *[tex \LARGE a] is the measure of a side of the equilateral triangle and *[tex \LARGE R] is the measure of the radius of the circumscribed circle.


I showed you in my last post how to calculate the area of an equilateral triangle using the measure of a side.  Use the same method here.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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