Conversion of Solid by Melting and Recasting

Conversion of cubes by Melting and Recasting : Three cubes are melted;whose edges are 3cm;4cm and 5cm to form a single cube. Find its edge; volume and surface area.

Conversion of Solid by shape change

State which of the following terms connected with change of state of matter i.e. - a] Melting b] Vaporisation c] Condensation d] Freezing - pertain to - (i] Conversion of a liquid into a vapour or gas [ii] Conversion of a liquid into a solid. [iii] Conversion of a solid into a liquid on heating.

Name the term used for the following : (i) Conversion of vapours to solid (ii) Conversion of solid to liquid (iii) Conversion of vapours to liquid.

For the conversion of liquid into a solid

A solid sphere of radius r is melted and recast into the shape of a solid cylinder of heighty ‘r’. Then the radius of base of solid cylinder will be.............

A solid metallic sphere of radius 8 cm is melted and recast into 'n' spherical solids of radius 1 cm. then n=

A solid sphere of radius r melted and recast into the shape of a solid cone of height r, then radius of the base of the cone is (of equal volume)

A solid sphere of radius r is melted and recast into the shape of a solid cone of height r. Find radius of the base of the cone.

A solid sphere of radius 3 cm is melted and recast into a cylinder of radius 2cm. The height of the cylinder is :