I've googled and can't find how many wedding servings in a 15" round. Anyone know? I'm terrible w/ math!
I am not absolutely postive that my answer is correct, but I think it would be 70 if you were basing your serving sizes and cutting pattern on Wilton charts. Here is my justification. According to the Wilton charts a 14" serves 63 and a 16" serves 77. If you were to take the 14" cake and add a 1" perimeter, you would get approximately 7.5 servings (63 + 7 = 70). If you add another inch, you would have approximately 8 additional servings (70 + 8 = 78 servings). My best guess would be 70 servings in a 15" round that is 4" high.
HTH
lees_luv - thanks so much for the response! I didn't get a notification. 
I was trying to use math formulas - can never remember if it's diameter x pi or radius2 x pi! your way is easier! 
lees_luv - thanks so much for the response! I didn't get a notification.
I was trying to use math formulas - can never remember if it's diameter x pi or radius2 x pi! your way is easier!
Um....twice the radius IS the diameter.
You are right, varika! I was trying to figure out how to type the "squared" symbol.
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