#C4----------------------------------------------
plane p 0 0 0 1 0 0 0 1 0
pcone p p 15 18 25 180
profile pf o 5 -7 10 l 10 c 2 90 l 10 d -1 0 l 12
prism p2 pf 0 0 20
bfuse f p p2
nexplode f f
depouille result f 0 0 1 f_10 2 5 0 30 0 0 1

checkprops result -s 3673.56