it's alright redconer
the cake appears to have only two sides and therefore be two dimensional (9x2=18), so you're not missing much.
p.s. there's actually only 8
unless the thing on menen's head is one
in which case it's 9 x 2 - 1 = 17
oh i see
assumed it was meant to be a 3d cake from the side, but nevermind