A lead pencil consists of cylinder of wood with a solid cylinder of graphite filled into it. The diameter of the pencil it 7 mm, the diameter of the graphite is 1 mm and the length of the pencil is 14 cm. Find the: (i) Volume of the graphite (ii) Volume of the wood (iii) The weight of the whole pencil, if the specific gravity of the wood is 0.7 gm/cm3 and that of the graphite is 2.1 gm/cm3.

A lead pencil consists of cylinder of wood with a solid cylinder of graphite filled into it. The diameter of the pencil it 7 mm, the diameter of the graphite is 1 mm and the length of the pencil is 14 cm. Find the: (i) Volume of the graphite (ii) Volume of the wood (iii) The weight of the whole pencil, if the specific gravity of the wood is 0.7 gm/ $c m^{3}$ and that of the graphite is 2.1 gm/ $c m^{3}$ .

Put the parts in order to form a sentence. When you think your answer is correct, click on "Check" to check your answer. If you get stuck, click on "Hint" to find out the next correct part.