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Precal HW problem

  1. Oct 19, 2006 #1
    HI guys, I'm really confusing about this Q., and I hope you guys can give me some help. :smile:

    - Find the perimeter and the area of a regular pentagon inscribed in circle of radius 9.
  2. jcsd
  3. Oct 20, 2006 #2
    Break the inscribed pentagon into something simpler, such as triangles.
  4. Oct 20, 2006 #3


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    Draw lines from the center of the circle to the vertices of the pentagon. What is the angle between these lines?
  5. Oct 20, 2006 #4
    I just figured out how to work on the problem. thx everyone for helping me.
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