How do you find the volume of a capsule?

Answer 1

A capsule?
You mean like a pill that's round on each end?
Well, you treat it as a cylinder (the middle part) plus 2 hemispheres (and 2 hemispheres add up to one sphere).

The volume of the cylinder is its cross-sectional area times its length. Cross-sectional area equals the area of the circle with radius equal to half the capsule's diameter (its thickness), using the formula pi r^2.

the volume of the sphere (2 hemispheres) is (4/3) pi r^3, where r is the same as the r for the cylinder.

After factoring, you end up with:
pi r^2 (length + (4/3) r)

Answer 2

Weigh it empty on a gram balance sensitive to .001 gram. Completely fill it with water and weigh it again. The difference between the two weights in grams is the internal volume of the capsule in cubic centimeters. You can use this method to find the internal volume of any small container.

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