pcylinder b1 1 4 pcylinder b2 1 4 trotate b2 0 0 2 1 0 0 90 trotate b2 0 0 2 0 1 0 60 trotate b2 0 0 2 0 0 1 120 bop b1 b2 bopfuse result set square 46.8319