



 
Hi Wallis, The circumference of a circle is 2 r where r is the radius. Thus your circle has a circumference of
But, as you said, the sector you have is more than a quarter of this but less than half. Since all the way around the circle is 360 degrees the fraction of the circle you have is 110/360. Thus the length of your arc is
Penny  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 