SOLUTION: Question attached as image uploaded http://files5.pdesas.org/059088232065146060111098209002114133198070184117/Download.ashx?hash=2.2

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Question 857015: Question attached as image uploaded
http://files5.pdesas.org/059088232065146060111098209002114133198070184117/Download.ashx?hash=2.2
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
CAB looks like it is arc length.
You cannot measure the arc length without knowing the radius of the circle.
CAB=%2811%2F6%29pi%2AR
but that is not a choice.
If you have more information, please repost.