H5b = split a regular hexagon in 5 equal area pieces with minimum perimeter. This is not the best known solution. origin of coordinates: in the middle of the hexagon if there are symmetries in the solution the data are given only for the significant part border (-0.5, sqrt(3)/2) ( 0.5, sqrt(3)/2) ( 1, 0) ( 0.5,-sqrt(3)/2) (-0.5,-sqrt(3)/2) ( -1, 0) vertex 1 ( 0.313959199, 0.352902886) arc 11 (-1.455220851, 0) 1.804033952 [centercoordinates and radius] arc 12 ( 0,-0.573630957) 0.978281831 [centercoordinates and radius] arc 13 ( 1.722632657,-1.251636477) 2.135159824 [centercoordinates and radius] yields the following cutlength CL = 4.380785077