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pi*r*h2 is an expression.

On the basis of conventions, one might assume that r is a radius, and h is a height. Since both these are measures of length, the overall expression has dimensions [L]*[L2] = [L3], that is, the dimensions of a volume.

Common shapes with one measure of radius and a height are cylinders, cones, sections of a sphere but the above expression does not refer to the volume of such a shape.

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12y ago

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