So, I assume the pizzas in the US are pretty large.
Our "large" pizzas here in Germany have a diameter of 26cm. I usually eat one of those on my own.
IME, That’s about a typical US small pizza (10”; large is typically 14” though I've seen places that use 12”/14”/16” S/M/L.)
Given a radius of z:
Pi•z•z=a
So, I assume the pizzas in the US are pretty large.
Our "large" pizzas here in Germany have a diameter of 26cm. I usually eat one of those on my own.