What's is dv for a finite cylinder?

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SUMMARY

The volume differential for a finite cylinder is expressed as dV=π*L*r*dr, where L represents the length of the cylinder, r is the radius, and dr is the infinitesimal change in radius. This formula is derived from the established volume differential for an infinite cylinder, dV=2*π*r*L*dr, which applies to cases where the length is not constrained. Both formulas are valid, but the finite cylinder formula is specifically applicable when the length is known and finite.

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For an infinite cylinder dV=2*pi*r*L*dr
Would dv=pi*L*r*dr for a finite cylinder?
 
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charlies1902 said:
For an infinite cylinder dV=2*pi*r*L*dr
Explain this in words, to show that you understand it and how it arises.
 
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