a designer plans to create a new pattern of stitching in a triangular piece of fabric shown in the figure above. she will stitch fabric in a straight line from the vertices of the triangle to the circumcenter of the triangle, located at point c, and then stitch an additional line of fabric back from the circumcenter to each vertex. how much fabric, in inches, will she need in total to create the design? (note: answer should be a whole number.)