For objects with the same perimeter, the larger the number of sides, the larger the convex figure area. When the number of sides is the same, the regular polygon has the largest area. To sum up, the circle with the same circumference (which can be regarded as a regular infinite polygon) has the largest area.

Generally speaking, a 6-inch cake refers to a cake with a round diameter of 6 inches. One inch is 2.54 cm, so the diameter of a 6-inch cake is 15.24 cm. A 6-inch cake can serve 2-3 people, 1 pound.

Extended data

Selection of cake mold

1, 6-inch cake: for about 2-3 people, suitable for birthday parties, Valentine's Day, Mother's Day and other festivals. ?

2, 8-inch cake: 3-5 people eat, suitable for birthday parties, various festivals, visiting relatives and friends. ?

3, 10 inch cake: 5-8 people eat, suitable for birthday parties, various festivals, visiting relatives and friends. ?

4, 12 inch cake: 8- 10 people, suitable for birthday parties, various festivals, visiting relatives and friends. ?

5. 14 inch cake: 10- 12 people, suitable for company and class reunion. ?

6, 16 inch cake: 12 people or more, suitable for all kinds of medium-sized celebrations.