#B3----------------------------------------------
plane p 0 0 0 1 0 0 0 -1 0
pcylinder p p 10 20
plane p2 10 0 5 0 0 1
pcone p2 p2 7 5 20
bfuse f p p2
nexplode f f
depouille result f 0 0 1 f_4 10 0 0 25 0 0 1

checkprops result -s 2441.77