A cylinder can be dissected into unequal squares, with nine squares required at a minimum. Trivial squarings can be constructed by taking rectangle dissections and matching edges, but there are two nontrivial nine-square tilings (Stewart 1997).
Cylinder Dissection
See also
Möbius Strip Dissection, Perfect Square Dissection, Torus DissectionExplore with Wolfram|Alpha
References
Stewart, I. "Squaring the Square." Sci. Amer. 277, 94-96, July 1997.Referenced on Wolfram|Alpha
Cylinder DissectionCite this as:
Weisstein, Eric W. "Cylinder Dissection." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/CylinderDissection.html