Pi is now 5 due to inflation
To be Devil's Advocate:
Given that the rest written in Comic Sans, it may be an early elementary school exercise, aimed at teaching kids to do multiplications. In this case, it's tolerable and/or defensible to find a simplification for pi.That said, making pi equal to 3 would have been more accurate for that...
Unless the kid is even slightly above average and finds the idea that pi equaling 5 confusing.
...if they're above average, I think they'll figure out the explicitly defined variable. I think the instructor is trying to make sure this problem doesn't require a calculator and figured defining pi as 5 makes it clear that you can treat it as a whole number. 3 would be more accurate and just as easy, but meh idk that this is that great of a blunder.
Heh nice try but we don't write textbooks or exams for the outliers.
Or it's from an ME. They seldom can remember the rounded value of Pi, but they're pretty sure it's somewhere between 3 and 4. But you probably should use 5 just to be safe.............
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That's how you know math is OP when you can calculate volumes in parallel worlds where circles don't even looks like circles
Ah, Manhattan. Where pi = 4, and circles are diamonds.
They're just rounding up from "3."
And not that pussy rounding up where you go up by only 1, oh no, we’re rounding up 2 baby.
The value of Euler's number is now 4.
Damn inflation is everywhere now, even the transcendentals :'(
pi, as it turns out, is just the friends we made along the way
Wow, 5 friends is more than what I have!
This is how the wealthy calculate their tax exemptions.
Due to inflation, they now have a bigger pi.
This guy has think tank fellowship written all over them.
A bigger pi-ness.
With π=5 maths break down completely. If π=5, then e^(5i) = -1, meaning -1 = cos(5) + i * sin(5), or -1 ≈ 0.284 - 0.959 i
I think you're overthinking it. The first thing you're told when you learn algebra is that a letter represents a number and you can say "let a equal (number), b equal (number)..." so you can let pi equal whatever you want for the purposes of one simple problem.
I think it’s actually a very interesting question. Pi does not equal 5 in our universe, but perhaps we can think of a meaningful universe where it does? Perhaps some mathematicians/physicists can chime in?
It would be theoretically possible in a universe based upon non-Euclidean geometry.
Maybe e is 5, too?
Idk, if you want to test people on how they understand formulae and order of operations without letting them just punch it into a calculator. The actual math isn't hard, but if you don't get substituting values into an equation then it's not trivial
When you want students to not use calculators but still rate a question for 10 second answer.
"One! Two! FIVE!" "Three, Sire!" "THREE!"
Teaching them to to obey dumb instructions from incompetent bosses.
Very useful skill.Assume the earth is a flat disc . . .
I've moved on to a no earth society.
It's called philosophy haha
That just means the curvature of spacetime is negative.
π = 5 for very small values of r.
New New math
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Ah, Indiana math.
My favorite is when doing Order of Magnitude estimations, you are supposed to let pi = 1
This physics class?
Astronomy.
I would be a smartass and leave Pi as a factor throughout and in the answer. I'm used to doing that in Calculus anyways.
V = πr2h
V = π⋅102⋅10
V = π⋅100⋅10
V = π1000
BONUS SOLUTION:
V =∫010 A⋅h dh
A = ∫010 2πr dr
V= ∫010 ∫010 h⋅2πr dr dh
h is a constant for A's integral so we can safely move it into V's integral
V= ∫010 h⋅∫010 2πr dr dh
π is a constant so we can safely remove it from A's integral
A = π⋅∫010 2r dr
A = π⋅[r2]010
A = π⋅( [102] - [02] )
A = π102
A = π100
V = ∫010 h⋅π100 dh
π100 is a constant so we can safely remove it from V's integral
V = π100⋅∫010 h dh
V = π100⋅[h]010
V = π100⋅([10] - [0])
V = π100⋅10
V = π1000
It goes a lot deeper but I'm not bored enough for that, yet.
EDIT: Hang on. I'm wrong with that height integral. Can somebody help remind me?
If you really wanted to be through you'd start at a point, integrate out along dr for a line, then integrate in a circle through dtheta to derive the area before doing the rest
Makes me miss the days of 22/7.
π = 5 if you round to the nearest 5
The answer is substantially different though. 3141 units (rounded correctly) vs 5000. That's a significant margin that even working it out in your head is not forgiving enough to cover.
Unless I fucked up.
...in spacetime with high curvature?
Doesn't curvature cause pi to not be a constant? And wouldn't it be negative curvature that would cause it to be higher than euclidean space?
pi was mutable all along
Pi = phi
I think I just got it! Pi is very close to 5 dB (~4.9714 dB)
Nother one of them "uncertified teachers" huh
500? But I just woke up and I take sleeping pills so my brain might not be working.
5*10**2*10 = 5*10*10*10 = 5000Good thing I don't need to do math at work. Saw a video the other day where someone said "10x400" and was shocked that they couldn't instantly multiply by a power of ten. And then I walked into this.
So is their answer just 5,000?
Yes about 2000 too much.
suspension of belief is also being tested, I see.
Numbers are symbolic, I’d say it’s not a bad piece of homework to supplement a lesson that numbers are to be respected but ALSO to always know that they mean nothing without context.
We can appreciate the beauty of infinity in memorizing pi, but the reality we live in demands actions of whatever the fuck it is we redefine volition, will, or passion to.
I think people can be so much more, but my idea of more is tainted by the values I have. Not everyone would agree with the idea that we all deserve to live.
Survival of the fittest, they support indirectly. With actions that include the advent of modern advertising. The CIA(?) experiment on attention, catalyzed by the creation of lsd in the knowledge-obtaining-goal of understanding the mechanics of attention, were directly related to the patriot act.
I’m not claiming anything other than the fact that our “leaders,” have used their knowledge of attention spans to sway the, “masses.” The rest of us.
How do you think of the, “rest of us?”
I hope you teach your children that, and that math is the beauty we’ve come to understand in our millennia of evolutionary timescales, of fucking struggle.
You have within you, much.
Do not waste the years of before, do something to help. Not your country, but your reality. The outside. You’re something. Not “nothing but a part of.” There’s so much in the word, “just.”
That’s all I have to say. Just that. Not much. Just a tiny little wall. Sorry. I write, and I rant, and I let go. Please don’t ban me. I matter and I’m not hateful. I’m sorry.
I truly wonder what sprouted this comment. We're all taking about how this one teacher butchered math by rounding π completely incorrect and you're posting this half-rambling, idk if medicaments-induced, pseudo intellectual crap. This has 0 to do with it, go to some DMT board.
Reading that comment was a wild ride! It started off innocuous enough, but really went off the rails FAST!
Nobody knows how to think like a dyscalculic at all haha... it's just a little symbol thingy... it doesn't have to be pi. Just like X is a little symbol thingy... the x is now just kind of a table right now...... it's just a little symbol thingy and it means five it's not that difficult. Lmao
Here's a little LPT for you: you can be correct without being an obnoxious douchebag about it.
Yeah, "symbol thingy" is setting me off rn.
The only thing that can help me is filing my taxes incorrectly.Your message reads kinda douchey.
Yes it does have to be pi because that's the formula for the volume of a cylinder. If you take a simple, cylindrical glass or container and measure it and apply the formula with pi, you'll see that you'll get the correct volume of the container. If you just want your kids to calculate a random x that's 5* 10 *10 *10 just tell them to do that, don't give them a made up formula, it's not that difficult.
Mathematically, no, it does not. We make up the definitions. If you wanted to see what the consequences of a, I don't know, 5-dimensional universe with Pi set to 5.65 were, you can do that. These are scribbles on pages, there is literally nothing stopping you.
Academically, what's stopping you is whether these calculations are useful. The only problem I see here is that it's kind of misleading to imply to someone that Pi is something it conventionally isn't. But even then, I think I'd respect the mathematician who could recognize Pi as a symbolic name for, usually, one particular transcendental constant a little bit more than one who refused to even entertain the idea. Like, imagination is important to mathematics, too.
And to be clear, "let Pi = 3.14" is also incorrect. It is closer than 5, but it is still infinitely wrong.
[edit] And also, I was imagining this question was for a younger audience. Reading it again, I'm not going to pretend I know what's going on up there.
