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A lead pencil consists of a cylinder of ...

A lead pencil consists of a cylinder of wood with a solid cylinder of graphite filled in the interior. The diameter of the pencil is 7 mm and the diameter of the graphite is 1 mm. If the length of the pencil is 14 cm, find the volume of the wood

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The correct Answer is:
The volume of wood is 5.28 `cm^(3)` and the volume of graphite is 0.11 `cm^(3)`.
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