There is a difference between Chord length and ARC length, to understand this, take a piece of paper, make a cone out of it, then flatten the cone, then cut two parallel cuts on the flattened cone as a trim and then unfold it, you will see the Arc and the chord, and you will have your reducer. But it won't look like what you have drawn, it will be curved.
When you fold it back up it will be your cone, you had the right idea but you needed to have the circumerence drawn in an arc, you have it drawn as a chord..
Last edited by geezer; 12-18-2011 at 01:38 AM.
Some of those lies people tell about me, are true