2006 AMC 12: A circle of radius r is concentric with....

malick

New member
Joined
Jun 16, 2006
Messages
23
Hello,

my question is:

A circle of radius r is concentric with and outside a regular hexagon of side length 2. The probability that three entire sides of hexagon are visible from a randomly chosen point on the circle is 1/2. What is r ?

Any help would be greatly appreciated.
 
Top