To be able to divide it into 6 portions, a 9-inch pizza means that it has a diameter of 9 inches, and the conversion ratio between inches and the commonly used centimeters is that 1 inch is about 2.54 centimeters, so a 9-inch pizza has a diameter of about 22.86 centimeters.

Damela's Pizza, an international chain of pizza delivery restaurants based in Ann Arbor, Michigan, USA, was founded in 1960 by Tom Monaghan.