a lead pencil consists of a cylinder of wood with solid cylinder of graphite filled into it the diameter of the pencil is 7mm the diameter of the graphite is 1mm and the length of the pencil is 10cm find the weight of the whole pencil if the specific graphite of the wood is 0.7g/cm^3 and the graphite is 2.1g/cm^3
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total volume is 2.805g
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dheeraj9999:
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