This is based on a slice 1" x 1", or 1/2" x 1 1/2" of rich fruitcake, and 1" x 2" of sponge cake.

Size	Round		Square		Hexagon Petal Heart
	Fruit	Sponge	Fruit	Sponge	Fruit	Sponge
5"	13	7	24	12	10	6
6"	24	12	35	17	15	8
7"	35	17	47	24	24	12
8"	47	24	60	30	35	17
9"	60	30	75	38	47	24
10"	75	38	95	48	60	30
11"	95	48	118	58	75	38
12"	118	58	140	70	95	48
13"	140	70	160	80	118	58
14"	160	80	188	95	140	70