#How to avoid units messing with volume measurements?

6 messages · Page 1 of 1 (latest)

primal linden
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Getting back into math and currently stumped, not sure what I'm not getting here:

If I'm calculating the volume of a geometric object, say a sphere, I use the equation V = (4/3 * pi * r^3). However, the volume value will change depending on the value I use for the radius, i.e. 21mm (volume is much larger) vs 0.021m (volume is much smaller). I would assume the radius of the sphere is equal in both cases. How do I know which values to use, or what conversions to apply to get the same volume for calculations?

steep kettleBOT
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The volume value won't be different per se it's just that the units would be different so since one is measured is a small unit (mm cubed) it would look bigger than the one measured with the comparatively larger unit (in terms of meters^3)

primal linden
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Ah yeah I see it now, I was just converting the units incorrectly. Thank you for the help and outside perspective!

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