Tonight, my church had a 2 baptisms and 11 confirmations. I was asked to provide cake for the reception that followed, which would feed 125 people. I am not accustomed to serving that many people and was not wanting to make a tiered cake. So, this is what I delivered instead.
The 12" round cake serves 40 - 50 people.
The 12" square serves 50 - 60 people.
That comes to 90 - 110 servings, so I added 20 cupcakes to make it an even 110 - 130.