A led pencil consists of a cylinder of wood with a solid cylinder of graphite filled into it. The diameter of pencil is 7mm, the diameter of graphite is 1 mm and the length of the pencil is 10cm. Calculate the weight of the whole pencil, if the specific gravity of the wood is `0.7 (gm)/(cm)^3` and that of graphite is `2.1 (gm)/ (cm)^3`

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 and that of the graphite.

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 and that of the graphite.

A lead pencil consists of a cylinder of wood with a 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 14cm. 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

The thickness of a metallic tube is 1cm and the inner diameter of the tube is 12cm. Find the mass of 1m long tube, if the density of the metal be 7. 8\ gm//c m^3

The thickness of a metallic tube is 1cm and the inner diameter of the tube is 12cm. Find the mass of 1m long tube, if the density of the metal be 7. 8\ gm//c m^3

The length of a pencil is (15.1+-0.1) cm. A small piece of length is cut out so that the length of the remaining pencil is (11.9+-0.2) cm what is the length of the small piece?

The inner diameter of a cylindrical wooden pipe is 24 cm and its outer 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.

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

A cubic cm of gold is drawn into a wire 0.1 mm in diameter, find the length of the wire.

Find the weight of a lead pipe 3.5m long, if the external diameter of the pipe is 2.4cm and the thickness of the lead is 2mm and 1 cubic cm of lead weighs 11 gm.