You need to use the central angle. If you know the radius or how CD works (does it go through the center), then the answer will be less vague. The central angle = 2 * 65 = 130 the length of BC is
130/360 * 2*pi*r 13/18 * pi r is the general answer.
well if you posted the graph i could give the exac answer but i cant so all you have to do is take one of the orignal points and move it down 5 units and left 8 units do that to all points and then you will have your answer