Calculator not allowed test probably
this post was submitted on 17 May 2025
763 points (98.8% liked)
memes
14884 readers
4777 users here now
Community rules
1. Be civil
No trolling, bigotry or other insulting / annoying behaviour
2. No politics
This is non-politics community. For political memes please go to [email protected]
3. No recent reposts
Check for reposts when posting a meme, you can only repost after 1 month
4. No bots
No bots without the express approval of the mods or the admins
5. No Spam/Ads
No advertisements or spam. This is an instance rule and the only way to live.
A collection of some classic Lemmy memes for your enjoyment
Sister communities
- [email protected] : Star Trek memes, chat and shitposts
- [email protected] : Lemmy Shitposts, anything and everything goes.
- [email protected] : Linux themed memes
- [email protected] : for those who love comic stories.
founded 2 years ago
MODERATORS
This is how you develop trust issues.
It’s clearly just saying that the surfaces on which the ends of the cylinder lie are metric spaces with distances defined using Chebyshev or Taxicab metrics based on pentagonal tilings of the parabolic plane so the ratio of a circle’s circumference to diameter is 5.
Since it’s a cylinder we assume the vertical dimension is Euclidean and voila the math checks out geometrically.
Just use 4 for pi
But it says π is 5
Assigning a value of 5 to pi, although ludicrous IRL, doesn't affect the problem. Plug the values into the equation and it will still give an answer that's correct in context.
I wish they would have used 22/7 for pi and 7 for the radius or height
Do cylinders even exist in metrics where pi = 5 ?
Yes. The 3d shape existence is not affected by changing pi values
Cause it's just a (n-1)-dimensional ball extruded along the remaining axis, or do all 3d shapes exist on (nearly) all 3d metrics?
load more comments
(1 replies)
load more comments
(2 replies)
load more comments
(6 replies)
The teacher is obviously a fat fuck that dreams of more pi.
10 cubits with a circumference of 30 cubits, yadda yadda yadda
edit: oh holy shit I hadn't thought about this kerfuffle for 25 years but when I made this comment I went looking on the "internet" and holy shit the apology I found is insane. Absolutely in.sane.
Really, go look at the apologists trying to say that atheists don't know what they are talking about, that the measurements aren't precise, that there is a 4 inch rim that makes up for the difference. Just. Wow. Fucking WOW.
Any religious fucker that wants to @ me, bring it to my DMs. If you defend this bullshit about 10/30 cubits fucking bring it.
Jesse what the fuck are you talking about
Shh, the adults are talking.
This question was written by an engineer
Nice try, physicists.
There’s good reasons they engineers over calculate, because they know things break, that people don’t do regular maintenance and that people will over stress the object. So engineers have to account for things like this when designing an object or a device so they don’t fail prematurely.
Engineer here, I always just use pi and a "safety factor" multiplier. Extra material is expensive, and I want the cheapest part (like a screw) to fail first. We don't just oversimplify pi because half the time it'll make your design weaker.
(If I just got whooshed I apologize)
100%, also how would I indicate to colleagues or successors when I used what value for pi? Clear diving is a thing for me.
Safety factors are both more explicit and self-documenting up to a certain point.
Factor of pi-safety
I'm familiar
It's funny because engineers are known for making simplifications like this, not because the simplification is problematic
AI?
This image long predates AI.
That classifies it as real stupidity :)
RS > AI
Just round up to the closest multiple of 5.
In combat conditions Pi can reach 4 and E can reach 3. Maul halten und weiter dienen, all that.
OK. I might be thinking too much into this, but the metric system is good for practical use, but bad for didactic purposes. Some things which could use understanding are "automated" with the metric system.
So making Pi a variable is ... fine. Maybe it's some different geometry where it is.