The diameter of a ten-inch pizza is 25.4 cm. One inch equals 2.54 centimeters. Pizza is named after its diameter. Pizza is not strict to the millimeter. Coupled with the invalid pizza edge, the real effective area generally needs to be removed from the area after the decimal point. The comparison of common pizza sizes is as follows:

1, 6-inch pizza-15.24 cm.

2, 7-inch pizza-17.78 cm.

3, 8-inch pizza-20.32 cm.

4, 9-inch pizza-22.86 cm.

5, 10 inch pizza-25.4 cm.

6. 1 1 inch pizza-27.94 cm.

7. 12 inch pizza-30.48 cm.

8. 13 inch pizza-33.02 cm.

9. 14 inch pizza-35.56 cm.

10, 15 inch pizza-38.1cm.

Ten inches is not a big pizza. As for how many people can finish it, it depends on the situation. One person who likes to eat can finish it. Generally speaking, 2-3 people can eat it very well. 6-inch pizza to 7-inch pizza is suitable for one person. 8 inch to 10 inch pizza is suitable for 2-3 people. 1 1 inch pizza and 12 inch pizza are suitable for 3-4 people. 13 inch pizza and 14 inch pizza are suitable for 4-5 people. 15 inch pizza and above is suitable for more than 6 people.