this post was submitted on 01 Oct 2023
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Science Memes

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[–] vaseltarp@lemmy.world 99 points 1 year ago (1 children)

A Pizza with the radius z and the height a has the volume V= Pi×z×z×a

[–] Akasazh@feddit.nl 14 points 1 year ago (1 children)

How do my pineapple chunks factor into the height?

[–] koorool@feddit.de 10 points 1 year ago (2 children)

For each piece of pineapple where nea is height of a cone, p is radius of a cone and le equals 1/3, volume is Pi * nea * p * p * le.

You understand now why people don't like pineaaples on their pizzas?

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[–] AllNewTypeFace@leminal.space 71 points 1 year ago (4 children)

That must be from a Christian homeschooling textbook

[–] tsonfeir@lemm.ee 26 points 1 year ago (2 children)

It’s really difficult to calculate circumference when the earth is flat.

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[–] abcd@feddit.de 10 points 1 year ago

π ✟ π = 10

[–] jmcs@discuss.tchncs.de 5 points 1 year ago (1 children)

The bible says π is 3, so they wouldn't get it this wrong.

[–] elvith@feddit.de 19 points 1 year ago (1 children)

And the Lord spake, saying, ''First shalt thou take out the Holy Pin. Then shalt thou count to three, no more, no less. Three shall be the number thou shalt count, and the number of the counting shall be three. Four shalt thou not count, neither count thou two, excepting that thou then proceed to three. Five is right out. Once the number three, being the third number, be reached, then lobbest thou thy Holy Hand Grenade of Antioch towards thy foe, who, being naughty in My sight, shall snuff it.'

[–] CyberTailor@beehaw.org 3 points 1 year ago

Unexpected Monty Python

[–] agent_flounder@lemmy.one 3 points 1 year ago

So the answer is Jesus. Y'know, because "he's the answer to everything?"

So happy to be atheist now ..

[–] F4lcon@discuss.tchncs.de 55 points 1 year ago (3 children)

It's to make the numbers simple because they aren't important, the methodology is

[–] TheOakTree@lemm.ee 52 points 1 year ago (2 children)

I get that, it's like rounding gravitational acceleration (on earth) to 10...

But why don't they just use 3, preceded by a "pi is a little more than 3, but for now we'll round down to 3."

[–] jadero@mander.xyz 27 points 1 year ago (10 children)

Especially given that using π=3 is accurate enough for most daily use by ordinary people for ordinary things.

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[–] LemmysMum@lemmy.world 27 points 1 year ago* (last edited 1 year ago) (10 children)

Sure, until you actually need the correct result of the circumference of a circle and think pi is 5.

Misinformation is education. Welcome to the future.

[–] aesopjah@lemm.ee 24 points 1 year ago (2 children)

Like, at least make it 3 instead of 5. Still allows for mental math

[–] LemmysMum@lemmy.world 14 points 1 year ago (2 children)

It's fucking pi. It's a constant that will never change in their entire lives, just teach reality the first time instead of making up a thousand little lies to correct later.

[–] fsxylo@sh.itjust.works 12 points 1 year ago (1 children)

thousand little lies

What do you mean there are more than 3 states of matter?

[–] echodot@feddit.uk 3 points 1 year ago

Wait until they start to learn about quantum foam and super fluids.

[–] aesopjah@lemm.ee 9 points 1 year ago (9 children)

Gotta cut it off at some point though, right? How many decimals? 10, 4, 1, or 0?

Plus, this is a test not the knowledge delivery. Some thing as 'assume a flat plane with no friction' for a physics test. Yeah it's not 100% accurate but the test taker can be evaluated on the methods

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[–] Reddit_Is_Trash@reddthat.com 8 points 1 year ago (5 children)

This is what we get when we cater to the dumbest kids in the class.

[–] echodot@feddit.uk 5 points 1 year ago

The dumbest kids in class can't handle algebra.

It's a really bad question for all sorts of reasons. Firstly because they defining π as 5 (it's not even close to the real value) and they never explain what h is.

Also you should probably just use letters everywhere at this point and not use π unless π equals π.

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[–] UnknownQuantity@lemm.ee 3 points 1 year ago (1 children)

Then let's teach kids to use Wolfram Alpha.

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[–] bradinutah@thelemmy.club 47 points 1 year ago

"One! Two! Five!" "Three sire!" "Three!"

[–] tigerjerusalem@lemmy.world 39 points 1 year ago (2 children)
[–] November@feddit.de 19 points 1 year ago (1 children)
[–] jadero@mander.xyz 5 points 1 year ago

Not necessarily. Calculating the flotation of a cylindrical pontoon using pi=5 will leave you with a boat that sinks!

[–] Kolanaki@yiffit.net 13 points 1 year ago

So it's like a baker's dozen?

[–] xusontha@ls.buckodr.ink 33 points 1 year ago (2 children)

It's called rounding, honey. Look it up

[–] GrammatonCleric@lemmy.world 55 points 1 year ago (3 children)

That's a hell of a rounding 😅

[–] xusontha@ls.buckodr.ink 30 points 1 year ago (1 children)

Yep, it's the secret strategy of rounding to five. Not to a multiple of five, but just five.

[–] blackluster117@possumpat.io 16 points 1 year ago (1 children)

60% of the time, it works everytime.

[–] agent_flounder@lemmy.one 12 points 1 year ago
[–] dojan@lemmy.world 12 points 1 year ago

In base five it’s fine!

[–] Intralexical@lemmy.world 24 points 1 year ago* (last edited 1 year ago) (5 children)
[–] Classy@sh.itjust.works 3 points 1 year ago (2 children)

Thank you for making the link virtually untappable on mobile.

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[–] SasquatchBanana@lemmy.world 3 points 1 year ago (1 children)

Well that's a read and a half. I never expected something like that to happen

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[–] Espi@lemmy.world 20 points 1 year ago

At that point just make pi 1 for even easier calculation

[–] Etterra@lemmy.world 19 points 1 year ago (1 children)

Your conditions are nonsensical, therefore the answer must also be nonsensical.

V = A sculpture of Tom Selleck made out of scalloped potatoes.

[–] siewyuk@monyet.cc 4 points 1 year ago

I would prefer David Hasselhoff made out of hasselback potatoes.

[–] doctorcrimson 12 points 1 year ago

My math teacher back in school blew my mind once with this:

"If you ever get a funny number like 6.28318530717958647 just divide that by π and see if that fixes it. It equals 2, so the answer isn't 6.283... it's just 2π and that's how you should write your answer. Sometimes you get 1.0471975 well guess what? π/3. Simple. Pi isn't a variable, it is a number and you can just leave it in that form for your answers."

[–] Swedneck@discuss.tchncs.de 5 points 1 year ago

assume pie is in my belly

[–] xantoxis@lemmy.world 5 points 1 year ago
[–] LoamImprovement@beehaw.org 3 points 1 year ago

"Pi is exactly five!"

Shocked gasps

[–] ohlaph@lemmy.world 3 points 1 year ago
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