The weights of the dough balls that were purchased at the De Lorenzo's on Sloan weighed 11.2 ounces. for the small pizza, or 317 grams, and 16.7 ounces or 473 grams for the large size pizza. Of course there is flour on the dough balls that wasn't weighed. The dough balls are frozen now.
Irrespective of the size of pizza you and Trenton Bill were served at De Lorenzo/Sloan, assuming that the two dough balls you purchased are for 14" and 16" pizzas, which are the two pizza sizes that Rick De Lorenzo mentioned to you recently at his Facebook page, the corresponding thickness factors are as follows:
11.2 ounces (14"): TF = 11.2 (3.14159 x 7 x 7) = 0.07276
16.7 ounces (16"): TF = 16.7/(3.14159 x 8 x 8) = 0.08306
In actual practice, unless one uses a scale to weigh the dough balls, their weights can vary from one dough ball to another, as can the sizes of the pizzas made from the dough balls. For example, if 11.2 ounces of dough was used to make your 13" pizza, and assuming no shrinkage during baking, the thickness factor would be 11.2/(3.14159 x 6.5 x 6.5) = 0.08438.