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I do a similar cost comparison when eating pizza by determining how much bigger (more square area) the next size up is. If all you have is a non-scientific cal
by hcrisp 7y ago
I do a similar cost comparison when eating pizza by determining how much bigger (more square area) the next size up is. If all you have is a non-scientific calculator, the trick was to divide the square of the radius of each pizza (since you are looking for the ratio of area, pi*r^2, and pi drops out). For example, if comparing 16" and 12", you just evaluate 8×8 / 6×6 = 1.7x bigger. Usually cost of the 16" is much lower than 1.7 the 12" so might as well get the larger size (and leftovers are fine).
- paublyrne 7y agoIt can be false economy of course because, leftovers or no leftovers, there's a strong possibility that'll you'll just eat more food than you would have otherwise. Food economy isn't a zero sum game.
- hcrisp 7y agoI think in an economic sense I estimate the amount of utilization more pizza will give me, and once I know how much costlier the next size will be per square inch, only then I conclude if it's worth it or if "I'm not really hungry enough to pay _that_ much!"
- mikekchar 7y agoNot sure if this still a thing in Canada (I haven't ordered pizza there for more than a decade), but my pet peeve was always the answer to the question, "How big is the medium pizza". "Eight slices". Drove me round the bend...