Stacked circles of equal area can be used to describe an informal argument for the volume of a cylinder.
The volume of a cylinder can be approximated by stacking together circles of constant radius (the base of the cylinder) over its height, where each circle has an area equal to the area of the base. This leads to the formula for the volume of the cylinder \( V = \pi r^2 h \), where \( r \) is the radius of the base and \( h \) is the height of the cylinder.
In contrast, while one could draw connections between stacked circles and the volume of a cone or a sphere, they do not directly represent that volume as cleanly as cylinders do with their constant circular cross-sections.
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