Cake originated in the west, and then it was slowly introduced to China, so the size of the cake is generally inches, which refers to the diameter of the finished cake.
Extended data
Common cake sizes
6 inches: 02-03 people eat, suitable for Valentine's Day, Mother's Day and other festivals;
8 inches: 03-05 people eat, suitable for birthday parties, various festivals, visiting relatives and friends;
10 inch: 05-08 people eat, suitable for birthday parties, various festivals, visiting relatives and friends;
12 inch: 08- 10 people eat, suitable for birthday parties, various festivals, visiting relatives and friends;
14 inch: 10- 12 people, suitable for company and class reunion;
16 inch: 12- 15 people, suitable for all kinds of celebrations;
18 inch: 15- 18 people, suitable for all kinds of celebrations;
20 inches: 18-20 people, suitable for all kinds of celebrations.
Baidu encyclopedia-inch