12x12=144
For a 12x12x2-inch cake pan, you typically need about 1.5 to 2 standard cake mixes, depending on the brand and recipe. A standard cake mix usually yields enough batter for a 9x13-inch pan, which is smaller than your 12x12 pan. To ensure you have enough batter, consider using two mixes or adjusting the recipe accordingly.
as mANY
that depends on how many slices you want.
18
Normally 12-16 slices but it depends on the sise of the cake.
That's difficult to answer because a sponge cake is very light and a pound cake is very dense, so you really need to indicate the size of the cake to get a better answer.
It depends how big you want the slices.
A 9x13" cake will feed about 45 people (assuming that the cake has two layers, each layer is about 2" in height, and the slices are 1.5x2" in size).
144 1-inch squares. 36 2-inch squares.
144 1-inch squares. 36 2-inch squares.
There Are About 20 grams in an average slice of cake. :D
Generally it depends on how deep (how many layers) your cake is. Standard serving size of a piece of cake is 1" x 2". Also depending on how large you want to cut your slices (sensible vs generous), a 7" round cake can serve anywhere from 6-10 people.