Well, for slices, that might be 3000. But I don't know if you mean for kids or adults, so for adults I would have to say 6000 or maybe 6500.
How many pizza's that it will take to feed 60 people will vary depending on how hungry people are and the size of the pizza. If you use a large pizza with 10 slices and figure everyone will eat at least 2 slices, you will need about 12 to 20 pizza's.
6 Slices = 2-3 pax
A sheet pizza will feed 6 to 8 with 24 slices in a sheet usually up to 32 slices best to figure 24 at 4 slices a person
A large Domino's Pizza is about 14 inches in diameter and is typically cut into eight slices. It can be expected to feed about 3-5 adults, on average.
A Panormous pizza from Pizza Hut typically contains 16 slices. This large pizza is designed to feed a group, making it a popular choice for gatherings. The size and number of slices can vary depending on the specific order, but 16 is the standard count.
A large pizza typically contains 8 slices and will typically feed 3-4 people. Sides are also available including cheese sticks, wings, chicken poppers and chocolate chip cookies.
there are 8 slices
there are 10 slices in a large Pizza
3 to 4
There are 24 square slices
I believe that there are 8 slices
About 67,200 slices