for the record, you also need to consider the height. [height] * pi * [radius]^2 = v.
it should also be noted that two 6 inch pizzas are smaller by area and volume than an otherwise similar 10 inch pizza (the combined area of 2 6 inch pizzas are 226.19 in^2, verses 314.15 in^2 for a 10 inch.)
see, the first two panels, just look like hell to me.
I’d much rather not have an audience when I’m jumping into a pile of leaves like a breaching whale, thank you very much… and I’d really rather not be eating with a bunch of mouthbreathers that chew with their mouth open. Positively ghastly, that.