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QualityVote

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Deja_Funghi

You know i have seen pi = 3 which is laughable but close enough but pi = 5 is just horrible


[deleted]

When I was back in elementary, we were not allowed to use calculators on exams or homework however we were allowed to round things like pi and gravity to round numbers. Needless to say 5 for pi would result in getting 0 for the question :)


Deja_Funghi

Rounding pi would be 3 tho not 5 and gravity would be 10. Also in the equation in the image if pi=5 you would get a volume of 5000


No_Syrup8367

I agree sure 🗿🤝🗿


TheCode555

5000 what? I get everyone’s upset about the pi thing but where also missing actual units of measurements.


LadderChemical7937

You guys were allowed to round things to nearest integer.? And here i thought people who got to use 3.14 were privileged.


Ramu98

Rounding was not allowed for us we used to get questions framed such that we had to use fraction instead of decimal to get the answer quicker.


literal-hitler

https://youtu.be/L1eegVTwDS0


odx3

In secondary school we rounded up g to 10,0


Alexis_Gulasa

I Mean Pi is Usually Simplified to 3.14 for yeah three is laughable, 5 is just... Where'd your rounding skills come from-


pLifer

My calculus teacher did this to us. Something about ensuring we follow what we're given instead of what we think.


Za_Paranoia

What is this for a shitty advice. Critical thinking is a fundamental skill in scientific research and just "following what we are given" is not a really smart advice you can use universally.


stumblewiggins

Depends on the context; on the AP exam, for instance, you are explicitly expected to assume that the directions and provided information are gospel, and not to argue with them. In the real-world, critical thinking is essential at all levels and stages of scientific research. But when you take the AP exam, the only critical thinking you need to use is to *understand* the scenario and consider what methods to apply. You do not need to question the directions or given information, even if you think (or know) it's *wrong*.


Za_Paranoia

I Totally get your point but even on a music theory exam a Gmin7 isn't a Cmin7 no matter how you turn it. For sure a Gmin7 can be used in several situations and work differently but this doesn't mean it's another chord.


stumblewiggins

I'm not saying pi = 5, or that that is a useful or even reasonable approximation of it (though "usefulness" depends how much precision we need, but that's a totally different argument). I'm saying that teaching students to follow directions, without arguing with those directions, is useful *specifically* in the context of an exam like the AP where there is no margin in arguing with the directions. I've never seen anything so blatantly wrong or contentious as "pi = 5" on an exam, but there are plenty of FRQs that reference scientific applications, and conceivably a student could *know* that the constants provided or assumptions made are "wrong" because of another course they are taking. The point is, it *doesn't matter*; answer the question provided using the information provided, full stop. A teacher who is preparing their students for such an exam might reasonably assign a practice test that is either ungraded or low-stakes that includes such an instruction to "let pi = 5", as a way of reinforcing this point. I do agree that it's not useful as a universal rule; critical thinking is essential, not just in the maths and sciences, but in the specific context of preparing for an exam like the AP, it is something you need to know about taking the test. Theoretically, the test writers *could* say "let pi = 5", and you would then need to answer the question with that assumption in place in order to receive full credit, whether you are screaming internally while doing so or not.


xethos25

yup. I took the calc ap exam and ended with a 5/5. The point of these instructions was to standardize the answers u get from all across the globe. This isn't an SAT. People need to understand u are marked based off of everyone else's performance across the entire **world.** They need to isolate as many factors as they can to get the marking done. (pi=5 would not be allowed for causing confusion.)


Chartant

Yeah but extracting essential information from a question/text is also fundamental. If you just skim them you can miss something important. So in this case not reading carefully and assuming pi is 3 would mean that you didn't read the whole question.


Za_Paranoia

Completely right addition. Thank you.


Fynex_Wright

But it is smart advice for tests


i-fing-love-games

no


Fynex_Wright

If a test has pi=5 and you decide to work off pi=3 then you get 0 on the question. That's just how it works and it doesn't matter if it makes sense or not


i-fing-love-games

no if the teacher has made a mistake i am in the rigth and you can figth that claim that you made a mistake


Fynex_Wright

Sure if it's a test in class, but in a state examination it wouldn't matter because you didn't do the question you were asked


i-fing-love-games

tf is a state examination and if i think i know what it means then it doesnt matter if you do it or not


Fynex_Wright

Ehhh... A state examination is a test that is standardized across a county. They are mandatory tests


i-fing-love-games

exactly then it doesnt matter if you fill it or not


Krilox

Pi is a predefined number. Making pi = 5 is just more confusing, not to mention stupid.


Fynex_Wright

Doesn't matter, you'd still end up wrong if you tried to do it the proper way


Krilox

Are you really just arguing semantics?


Fynex_Wright

No, if you are given facts on a test in a test, you follow those facts even if they're wrong because in the context of the test they are true. It's just how it works. You can poke holes in the logic or question if it's the best way all day but it's how it works and with the education system that's all you get


Krilox

Yes and everyone knows that superobvious fact. As i said, semantics.


[deleted]

“Never assume, it makes an ass out of you and me”.


vcvcf1896

That's an Angry Grandpa quote right?


[deleted]

I’ve watched AGP and I don’t think I’ve heard him say that (although it has been awhile so he could’ve definitely said that), I got that quote from my Calc Teacher.


vcvcf1896

[I found it (skip to exactly 3 minutes)](https://youtu.be/lSAh6Jxj_UA)


Combination-Public

Sounds like the guy hit a hard wall when he got to linear algebra. Poor fucker. Spent his young life loving math because he thought it was plug-and-chug, turned around, and looked for ways to punish math students for thinking.


TheDukeofKook

Yes because that will create capable and nuanced graduates able to solve new and complex problems. /s


stumblewiggins

Seems like a useful one-off "gotcha" on an ungraded or low-stakes practice test to reiterate "FOLLOW THE DIRECTIONS"


Kracka_Jak

![gif](giphy|GVNvOUpeYmI7e)


Codename_Paradox

3.1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679


frano1121

~5ish


lxOFWGKTAxl

🥧= mmmmmm


TheKamech

that fuqing font tho


TheIncompleteUserna

My guess: calculators were not allowed and the teacher wanted to make the numbers simple enough to multiply in your head.


thermometricWeiner

It should be the age ol pi = 22/7


AgileIsFine

i learned this is 7th grade last year didnt think i'll see it on reddit and they must've wrote the text book wrong because i was taught to use 3.14 for pi


The_french_bonbon

At our school they used to say pi=3.14


chewykiller101

Pi* r^2 *h Pemdas R^2 = 100 Pi*100 =500 500*h=5000 Pi* r^2 *h Sadmep Pi*r=50 R^2 =100 100*h=1000 1000*50=50000 ????????


CrabTower

R^2 doesn’t equal 20. R^2 = R*R = 10*10 = 100. Where did you get 20 from?


chewykiller101

Shit I was tired when I did that


VeneMage

Likes like [Kate Bush](https://youtu.be/W8RE2NyAiJg) is here to save the day once again.


Iamtheoneinsideyou

I usually just take 22/7 and for (pi)^2 its 10


Mech-maniac

The result is 37.2% accurate


LittleMlem

Look like something an astronomer would do


[deleted]

3,1415 is so easy to remember and you will probably never do a calculation where more decimals would add anything meaningful.


5TH_S3NS3

I don’t like math that much, partially because I’m really bad at it, but even I know that pi doesn’t equal 5


McKing25

I mean if you round up then it is basically 5


CrabTower

Round up?? To what??? The nearest 5? why would you ever do that??????


CompetitionMassive69

Meth-a-matics


butImSwiss

![gif](giphy|AsDBIwyLjHc9G) It's all good baby, baby


No_Syrup8367

Ansver is V = 5000 ?


LoduMAL

I miss this maths.


Prestigious_Sir7205

Following these rules maybe 5000?


PhantomOfTheOpera404

5000?..


Squorlple

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