The 12-inch cake is larger than the 10-inch cake.

1. The diameter of a 10-inch cake is 10 inches, and one inch is equal to 2.54 centimeters, so the diameter of a 10-inch cake is 25.4 centimeters, which is 2.54x10=25.4cm.

2. 12 inches is 30.48 centimeters in diameter. This theoretical value is actually about 30 centimeters, which is about enough for 8 to 15 people. The inch in the cake size refers to inches.

The sizes on the market today are generally relatively uniform, mainly because the molds produced by mold manufacturers are relatively uniform, which indirectly regulates the uniform size of cakes. The conventional standard sizes of cake shops include six specifications: 4 inches - 6 inches - 8 inches - 10 inches - 12 inches - 14 inches. Generally speaking, the measurement in inches/inches/grams/pounds can be roughly converted as follows:

4-5 inches (inches), about 250 grams, about 0.5 pounds, about 10-11cm in diameter, recommended number of people 1 -2 people.

6 inches (inches), about 500 grams, about 1 pound, about 15cm in diameter, recommended for 2-4 people.

8 inches (inches), about 1 kilogram, about 2 pounds, about 20cm in diameter, recommended for 5-8 people.

10 inches (inches), about 1.5 kilograms, about 3 pounds, about 25cm in diameter, recommended for 9-12 people.

12 inches (inches), about 2 kilograms, about 4 pounds, about 30cm in diameter, recommended for 13-18 people.

14 inches (inches), about 2.5 kilograms, about 5 pounds, about 35cm in diameter, recommended for 19-24 people.