I'm having trouble with this problem. The way I read it the arc in question is 24. Therefore 24=1/3*d*Pi (1/3 since equilateral triangle, so each arc should represent 1/3 of circumference).
(24*3)/PI ~ 23 but this is not the right answer. I was hoping someone could tell me where I am going wrong. Thanks.
where L is the length of the arc
Keep trying no matter how hard it seems, it will get easier.