• intensely_human@lemm.ee
    66·
    1 年前

    That can’t be true.

    Consider a cylinder cut in half, giving a circular cross section. Cover each new circular gap with new aluminum.

    Now you’ve enclosed the same volume in cylinders, with a different surface area.

    • Psychadelligoat@lemmy.dbzer0.comEnglish
      72·
      1 年前

      You also created 2 cylinders where once there was one, which is not what was being discussed. You even mention that you added material:

      Cover each new circular gap with new aluminum

      I could have said “2 cylinders of the same volume” but I felt context made that clear

      • intensely_human@lemm.ee
        54·
        1 年前

        Yes I did say that I added material. That’s the point: you cannot do this transformation without adding material.

        But you’re saying this is only with two cylinders?