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 diameter of graphite is 1 mm. If the length of the pencil is 14 cm, find the volumes of the wood and that of the graphite.

A lead pencil consists of cylinder of wood with a solid cylinder of graphite fitted 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 in grams correct to three places of decimals if the specific gravity of the the wood is 0.6 and of the graphite 2.3.

The diameter of a cylinder is 28 cm and its height is 40 cm. find the volume of the cylinder.

The diameter of the base of a cylinder is 6 cm and its height is 1 4 cm. the volume of the cylinder is

The inner diameter of a cylindrical wooden pipe is 24 cm and its out diameter is 28 cm. The length of the pipe is 35 cm. Find the mass of the pipe, if 1 cm^3 of wood has a mass of 0.6 g.

Find the height of the cylinder whose volume is 1.54 m^3 and diameter of the base is 140 cm ?

A metallic toy is in the shape of a cylinder whose both ends are conical in shape diameter of circular cross-section of cylinder is 6 cm and its height is 10 cm the length of the toy is 18 cm find the cost of gold plating it Rs. 100 per cm^2 .