SOLUTION: A circle is inscribed inside a regular hexagon. Find the ratio of the area of the circle to the area of the hexagon.

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Question 1103080: A circle is inscribed inside a regular hexagon. Find the ratio of the area of the circle to the area of the hexagon.
Found 2 solutions by ikleyn, KMST:
Answer by ikleyn(52873)   (Show Source): You can put this solution on YOUR website!
.
The area   of a regular  n-sided polygon circumscribed about a circle of the radius R is equal to


 = ..


The area of circle of the radius R  is  S = .


The ratio you are asking for is   = 

See the lesson
    - Area of a regular n-sided polygon via the radius of the inscribed circle
in this site.


Answer by KMST(5328)   (Show Source): You can put this solution on YOUR website!

= radius of the circle = height of each of the 6 triangles forming the hexagon.
= area of the circle
= area of the hexagon
is the ratio asked for.

You may have a formula to calculate the area of a regular hexagon
as a function of its apothem (which in this case is R),
but I calculated it by figuring the sides and area of the triangles.
The angles of those triangles measure .
That makes for the triangles,
so .
Area for 1 triangle would be
,
and the area of the hexagon is 6 times that
.

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