#C5----------------------------------------------
plane p 0 0 0 1 0 0 0 1 0
pcone p p 15 18 30 180
profile p2 o 5 -7 10 d 1 0 l 10 c 5 90 l 10 x -15 
polyline w 0 0 10 0 0 25
pipe p2 w p2
bfuse f p p2
nexplode f f
depouille result f 0 0 1 f_9 4 0 0 22 0 0 1

set square 3972.17