How to calculate the radius of a cylinder?

The volume of a cylinder = cross-section area x length of the cylinder.

Let L= length of the cylinder.

So, volume of cylinder, is: V = (Pi x r^2) x L

Given the volume of the cylinder and rearranging the previous line’s formula, we obtain the formula: r^2 = V/( Pi x L)

And finally, taking the square root of each side of the last formula, we obtain the formula: r = square root of [V/(Pi x L)]

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