perplexus.info :: Geometry : Decagon and Dodecagon Areas

Decagon and Dodecagon Areas (Posted on 2010-05-11)

The area of a regular decagon inscribed in a circle is 10 square units.

What is the area of the regular decagon circumscribed about the circle? How about the area of the regular dodecagon circumscribed about the circle?

Submitted by K Sengupta

Rating: 2.6667 (3 votes)

Solution: (Hide)

(1) area of a regular decagon circumscribed about the circle is approximately 11.0557.
(2)area of a regular dodecagon circumscribed about the circle is approximately 10.9407.
For an explanation, refer to the solution submitted by Bractals in this location.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Solution	Bractals	2010-05-12 17:06:50
No Subject	Ady TZIDON	2010-05-11 15:44:17
No Subject	Ady TZIDON	2010-05-11 15:44:15

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