S4a = split a square in 4 equal area pieces with minimum perimeter
origin of coordinates: in the middle of the square
if there are symmetries in the solution the data are given only for the significant part
border
(-0.5,-0.5)
(-0.5,+0.5)
(+0.5,-0.5)
(+0.5,+0.5)
vertex 1 ( 0, 0.234785392)
arc 11 (-0.383320867,-0.429145825) 0.766641733 [centercoordinates and radius]
vertex 2 ( 0.334809806,-0.160765714)
arc 21 = arc 11
arc 22 ( 0.5, 0.825498844) 1.000002789 [centercoordinates and radius]
arc 23 ( 0, 0.115311235) 0.433954016 [centercoordinates and radius]
yields the following cutlength
CL = 2.419232122