Two 5" pizzas instead of one 9" pizza? I think not: (Twitter)

[sl8]

And, as the top Reddit comment points out, for comparison purposes, you don't even need to use pi - just compare the square of the radii (or diameters, if that's easier). Easy-peasy.

Link to tweet

Link to tweet

Link to tweet

roychandan
@cretiredroy
·
I ordered a 9-inch Pizza.
After a while, the waiter brought two 5-inch pizzas and said, the 9-inch pizza was not available and he was giving me two 5-inches Pizzas instead, and that I am getting 1 inch more for free!
I requested the waiter to call the owner.

[...]

I gave him the mathematical formula to calculate the area of a circle.
Circle Area = π r²
where π = 3.1415926,
r is the radius of the circle.
So, a 9-inch circle area = 63.62 sq.in.
while a 5-inch circle area is 19.63 sq.in.

[...]

The two 5-inch circle areas add up to 39.26 sq.in .
I said that even if he gave three pizzas, I would still lose-out.
"How can you say you are giving me an extra inch for free?"
The owner was speechless.
He finally gave me 4 pizzas.

Take Maths seriously!

[Girard442]

1. Pie are square. Pizza sre round.

[sl8]

2. The fatal flaw? LOL. nt

[whistler162]

8. So I should be buying

Apple Pizzas instead of Apple Pies! English the language that exists outside of reality,

[Bernardo de La Paz]

26. In English language, it is not uncommon to say "pizza pie" like Sinatra. Most "pies" are round.

Reference the song "Amore".

Further, in English we say "Pies are ..." because the noun and the verb must agree as to plurality.

In English we write "Pizzas are round", not "Pizza sre round" (double mistake).

[callous taoboy]

3. Paging Walter White to confirm.

[VWolf]

17. "Apply yourself!" n/t

[callous taoboy]

35. Yo, like science and shit.

[sl8]

4. Incidentally, I can no longer read or hear "I think not" without thinking of the old Descartes joke

It's like an earworm.

Rene Descartes is having dinner alone at a restaurant...
...when he finishes his meal, the waiter approaches and says "and will monsieur be having dessert?"

"I think not" Descartes replies.

Poof! He disappears.

Descartes coined the phrase "cogito, ergo sum" (Latin: “I think, therefore I am).

[Grokenstein]

7. Reminds me of Monty Python's "Bruces' Philosophers Song"

Last edited Fri Jul 1, 2022, 02:16 PM - Edit history (1)

Immanuel Kant was a real pissant who was very rarely stable
Heidegger, Heidegger was a boozy beggar who could think you under the table
David Hume could out-consume Wilhelm Freidrich Hegel
And Wittgenstein was a beery swine who was just as sloshed as Schlegel

There's nothing Nietzsche couldn't teach ya 'bout the raising of the wrist
Socrates, himself, was permanently pissed

John Stuart Mill, of his own free will, on half a pint of shandy was particularly ill
Plato, they say, could stick it away, half a crate of whiskey every day
Aristotle, Aristotle was a bugger for the bottle, Hobbes was fond of his dram
And Rene Descartes was a drunken fart: "I drink, therefore I am."

Yes, Socrates himself is particularly missed...
A lovely little thinker, but a bugger when he's pissed

[sl8]

11. Outstanding! Thanks.

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[...]

[reACTIONary]

12. +100 nt

[reACTIONary]

13. +100 nt

[sl8]

9. I'm not following.

He identified the pizzas by their diameters (5" and 9" ), but used the radii (2.5" and 4.5" ) to calculate their areas.

What's the issue?

[Rabrrrrrr]

16. What?

a) do you have proof it didn't happen
b) what are you talking about with diameter/radius? The 9" pizza has a radius of 4.5", which works out to the 63.6 sq. inches the tweeter came up with. The 5" pizza has a 2.5" radius, which works out to the 19.7 sq. inches the tweeter came up with.

And it's weird you'd say that the math is correct while complaining it's wrong.

[whistler162]

6. Wow cold pizza and looking like

an a@@hole! Idjiot probably didn't even tip.

[Laha]

15. How is not wanting to get ripped off

being an asshole?

[dsc]

18. that isn't being an a hole

He was being rather seriously ripped off. 50/81 is only a bit over 60%. If I paid for 10 gallons of gas and got only 6 I would be exceptionally unhappy.

[whistler162]

30. Yes yes it is!

[Bernardo de La Paz]

24. So to avoid "looking like an asshole" you would rather be a loser. Don't even buy your premise.

Teaching somebody something important while getting proper value for money is NOT being an asshole.

Losing about half the pizza because of being worried about appearances is being a loser.

I do NOT buy your premise that they were "looking like an asshole".

[Bernardo de La Paz]

25. At the least the guy was being altruistic. That guy saved other customers from being ripped off. nt

[Bernardo de La Paz]

28. Being an asshole is about how one presents oneself, not about facts or reality of mathematics

You can explain reality (mathematics) in a pleasant non-demeaning way and that is NOT being an asshole.

If you shout or use profanity or insult the person, THAT is being an asshole. None of that is part of the story and I'm sure the math guy did none of that.

[mobeau69]

10. I delivered pizza while in college. Bunch of kids and a lady mgr. She ran the joint for several

years before I started. Anyway it didn’t take long to figure out that she was and had been shorting everyone on pay probably for her entire time as manager!

We would fill out our time card each day and give them to her at the end of the week. If you worke part of an hour (say 4 1/2) she would think 4 hours and 30 minutes and take the hourly at rate x 1.3. LOL. I had a hard time explaining to her that 30 minutes is .5 hours. She wasn’t happy with me!

[reACTIONary]

14. +10.3333.... nt

[Bernardo de La Paz]

27. Stupid people aren't happy when laws or reality contradict their bubble. . . . nt

[The Jungle 1]

19. The math depends on the yeast.

I go by thickness.

[thesquanderer]

20. "I'll give you 10 pizzas, just stop making my brain hurt!" n/t

[Pobeka]

21. While we are being circularly nerdy.

When you look at a section of a tree trunk, and examine its rings, the width of the rings generally becomes smaller and smaller as you move from the pith to the bark.

And the naive assumption is the tree is is slowing down in growth. But the mathematical reality (for a while) is the tree is actually accumulating more area of wood in one of those narrow outer rings than a wider ring near the pith.

Even trees can't avoid math.

[Bernardo de La Paz]

29. Had to look that one up, but you are correct

... about ring width as a function of age.

But it is not as obvious as you might think, since older trees counteract the raw math effect by being bigger and having more leaf mass and root mass that are feeding more nutrients and producing more food that builds the wood.

However, the observations of tree ring widths confirm that there is indeed a trend to smaller rings as trees age.

[Pobeka]

32. You are on the right track.

You can sort of think of it as a the ratio of leaf mass to the "sheath" of wood that will be laid down on the entire surface of the tree (from groundline to the tip).

The volume of this new annual sheath increases each year, hits a maximum, and then drops off. Physics gets in the way too -- water has to be pumped up via cellular processes from the root to the tree tip.

[sindri]

22. sounds like a great math problem for class

I have math teacher friends and I will tell them this story for them to share with their kiddos

[sl8]

33. +1. I would definitely have appreciated an example like this in math class. nt

[Bernardo de La Paz]

23. Mathematics rules the sciences and therefore rules the universe. . . . nt

[Hugh_Lebowski]

31. One of the most common comparisons one makes when buying is 12" pie vs 16"

"just compare the square of the radii (or diameters, if that's easier)"

using radius:
6^2 = 36
8^2 = 64
36/64 = 56.25%

i.e. it's often worth a significant upcharge to go from 12" to 16".

most XL pies are 18"
9^2 = 81
64/81 = 79%

don't spend much more for an XL vs Large.

[Martin Eden]

34. Reminds me of Yogi Berra being asked if he wanted his pizza cut into 6 pieces or 8 pieces

He said better make it 6, I'm not that hungry.

[Polybius]

36. I used to wait tables

I would have hated a customer like this lol.

[bluecollar2]

37. This thread is a perfect example of why

I come to the Underground every day...