• ns1@feddit.uk
    link
    fedilink
    English
    arrow-up
    2
    ·
    8 months ago

    More likely a mathematician would correct you instead of crying. Pi is not infinite, its decimal expansion is infinite!

    • zkfcfbzr@lemmy.world
      link
      fedilink
      English
      arrow-up
      1
      ·
      8 months ago

      Plus even that isn’t enough: 10/3 has an infinite decimal expansion (in base 10 at least) too, but if π = 10/3, you’d be able to find exact circumferences. Its irrationality is what makes it relevant to this joke.

      A mathematician is also perfectly happy with answers like “4π” as exact.

      Plus what’s to stop you from having a rational circumference but irrational radius?

      Writing this, I feel like I might have accidentally proved your point.

      • danc4498@lemmy.world
        link
        fedilink
        English
        arrow-up
        1
        ·
        8 months ago

        Mathematicians taking a physics class and being told they have to round things. That’s when the tears start flowing.