Thread: [SOLVED] Regular Hexagon Inscribed in a Circle

A regular hexagon is inscribed in a circle with a diameter of 10.36 cm. Find the area of the hexagon.

Help? I can't remember some of the rules in Geometry. I'm trying to solve this using the Laws of Cosine and Sine, as I'm in Pre-Cal, but I can't seem to figure it out.

Originally Posted by chrozer

Help? I can't remember some of the rules in Geometry. I'm trying to solve this using the Laws of Cosine and Sine, as I'm in Pre-Cal, but I can't seem to figure it out.

Look at this webpage.
Formula #4 answers the question.

Originally Posted by Plato

Look at this webpage.
Formula #4 answers the question.

=nsin(180/n)cos(180/n)(r^2)
=6sin(180/6)cos(180/6)(5.18^2)
=69.713 square centimeters

? is that right?