Here are some step-by-step photos of how to cut a cake. This method can be used on round or square cakes and coordinates with the Wilton Wedding Cake Serving Chart servings, based on an industry standard dessert sized piece of cake.
When I need to know how many cups of cake batter are needed for a certain size cake pan. Wilton Baking and Serving Guide. Duncan Hines mix, add one small box of pudding and an extra egg and consistently get 6 cups of batter.
Round Cake Cutting and Serving Guide - guide that I created to determine how many servings per each round cake and a diagram of how I would recommend it being cut, based off IndyDebis cutting instructions. Hope it helps!