Actually, melting the candies would yield 10491.53 pieces, perfectly. We make the assumption that no piece can be split, and thus at most 10491 pieces can fit. It's a neat problem I remember in grade school. Sometimes we just have to make assumptions on these. (perhaps the cone is so flat the .53 cm[sup:lgkpr8es]3[/sup:lgkpr8es] is air between?)
I understand the quarum of actual pieces being square and the shape they fit into being a cone. They are not going to fit exactly and it will be less than 10491, but without knowing angles of the cone or a radius we will not get a nice function to plug into an integral, no? My calculus is a wee bit rusty, but it may be beyond the scope of this part of the forum.