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Use the formula:

volume = π x radius2 x height

= π x (diameter/2)2 x height

that's how I find it, this is me doing it:

volume = π x (diameter/2)2 x height

= π x (2.1/2)2 x 12

~= 41.6 units3

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Q: How do you find the volume of a cylinder if the diameter is 2.1 and the length is 12?
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