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Has the imperial system gone to far?
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It's probably trying to teach kids algebra without using decimals. But it does look messed up. Everyone knows at least 3.14, except kids I guess
I got my daughter to memorize 50 digits of pi when she was 11 or 12 by betting her $50 she couldn’t.
I'll remember that, but she is four now....
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My 7-year-old got obsessed and did it from a YouTube video to 100 places because he was bored.
He also knows base 2 to 65536
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I'm fine with 3, maybe 4, but 5????
Everyone knows at least 3.14
And biblical authors.
In Terry Pratchett's wonderfully witty Discworld novel, Going Postal, the topic of pi comes up in a rather humorous and characteristically Pratchettian way.
The newly appointed Postmaster General, Moist von Lipwig, encounters a rather eccentric inventor named Bloody Stupid Johnson. Bloody Stupid Johnson is known for his, well, stupidly brilliant inventions. One of these inventions is a new kind of postal sorting engine.
When discussing the design of a wheel for this engine, Bloody Stupid Johnson proudly states that he designed it so that pi is exactly three.
This is in contrast with how pi is otherwise consistently expressed on the Disc, which is "three and a bit."
Notably, Bloody Stupid Johnson is so skilled/inept that he actually does make pi equal to three within the machine... somehow... which breaks reality in a small amount of space inside it.
Apparently King David had this skill as well, since this is mentioned twice in the old testament:
1 Kings 7:23: And he made a molten sea, ten cubits from the one brim to the other: it was round all about, and his height was five cubits: and a line of thirty cubits did compass it round about.
Clearly π was equal to 3 in old testament times, but geometry got all screwy when Jesus died for our sines.
might also be to teach actually reading the instructions instead of blindly typing pi into the calculator
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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
For the benefit of doubt, maybe the test is from an alternate dimension that doesn't use euclidean space.
I've been there, I think, but it was really difficult to triangulate my location and confirm
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Do cylinders even exist in metrics where pi = 5 ?
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If the goal is to avoid calculations with decimal places, why not just leave Pi in the result?
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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.
Whoa, amazing!
Astrology is so cool
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This question was written by an engineer
Nice try, physicists.
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What kind of problem gives you the formula and all variable to replace? At this point, why not just write 5•10²•10=?
Intro to algebra type stuff to make sure you understand the concept of variables in the first place
Pi= 5 in this teachers reality. Circles must look wonky.
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One written in Comic fucking Sans
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In America, numbers are just bigger.
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Bye, bye, miss American PI.
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Calculator not allowed test probably
Even if so, the other factors are both 10. How hard can it be...
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This is how you develop trust issues.
This was written by an engineer. They rounded up to 5 for the safety factor.
Ah yes, all those imperial units...
Every engineer knows pi is 3 🤦♂️
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It's official, the observable universe is ~3 times larger!
3,140, uh, somethings? LOL, I started without realizing they defined pi as 5.
Man the Americans... everyone knows that π=-10
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Ha Ha, non-Euclidian geometry go brr. :)
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.
Just round up to the closest multiple of 5.
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this post was submitted on 17 May 2025
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