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Working with rotatinal inertia of a cylinder

A solid cylinder of mass 8kg and diameter 20cm is rotated about an axis parallel to its central axis at a distance of 10 cm from the cylinder. the rotatinal inertia of the cylinder about the parallel axis is:

a. 0.12 kg m^2
b. 0.08 kg m^2
c. 12 kg m^2
d. 0.04 kg m^2

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For solid cylinder I = MR^2/2 if the axis is through its center

We will use the parallel axis theorem ...

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The right answer with proper explanations.