The slant height of the frustum of a cone is 5 cm. If the difference between the radii of its two circular ends is 4 cm, Find the height of the frustum.

The dimensions of a metallic cuboid are 100 cm x 80 cm * 64 cm. It is melted and recast into a cube. Find the surface area of the cube.

A copper sphere of radius 3 cm is beaten and drawn into a wire of diameter 0.2 cm. The length of the wire is.

A metal sheet 27 cm long, 8 cm broad and 1 cm thick is melted into a cube. The difference between surface areas of two solids is

Three cubes of iron whose edges are 6 cm, 8 cm and 10 cm respectively are melted and formed into a single cube. The edge of the new cube formed is

3cm

38400 cm²

36m

286 cm²

12cm