A 22-inch Domino Pizza would be free

Want an absolutely huge Domino Pizza for free? Just ask a teacher. When pizza meets physics it become theoretically possible to order a 22-inch Domino Pizza and pay nothing for it.

Reigate physics teacher Alby Reid has calculated that, as Domino pizzas cost less per square inch the bigger they get, if Domino made one 22 inches across it would be free.