Seaside is a city in Clatsop County, Oregon, United States. The name Seaside is derived from Seaside House, a historic summer resort built in the 1870s by railroad magnate Ben Holladay. The city's population was 6,457 at the 2010 census.[7]
12 x 18 inch cut into 2 x 2 inches serves 54 people. Sheet Cake - Full sheet serves 80 to 90 Half Sheet Cake - Half Sheet serves 45 to 50 Maribelle's Party Sheet Cakes Size Servings 1/4 Sheet 25 1/2 Sheet 50 Full Sheet 100 hope these help. good luck and enjoy.
There is no standard size... But most people consider a half sheet cake to be between 11-12 x 15-18. When people ask for a half sheet cake I always ask how many people it needs to feed and then can further decide what size would be better.