A lead pencil consists of a cylinder of wood with a solid cylinder of Graphite field into it the diameter of the pencil is 7 mm the diameter of the graphite is 1 mm and the length of the pencil is 10 cm calculate the weight of the whole pencil if the specific gravity of wood is 0.7 gm/cm³ and that of the graphite is 2.1 gm/cm³.
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Lakshmipriya Sindhu
A lead pencil consists of a cylinder of wood with a solid cylinder of graphite filled into it. The diameter of the pencil is 7 mm, the diameter of the graphite is 1 mm and the length of the pencil is 10 cm. Calculate the weight of the whole pencil, if the specific gravity of the wood is 0.7 gm/cm
3
and that of the graphite is 2.1 gm/cm
3
.
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