Consumer tip of the day: A 12-inch medium pie has more than twice the pizza of an 8-inch small but is usually just a few dollars more.
The size of the pie is a matter of pi. Halve the diameter then square it and multiply by 3.14 (pi rounded off).
You’ll get 113 square inches of pizza in a 12-inch pie (36 x 3.14) vs 50 square inches in the 8-inch pie (16 x 3.14).
Bigger Pizza Better Deal