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