How many small cubes, each of 96 cm surface area, can be formed from the materia
How many small cubes, each of 96 cm surface area, can be formed from the material obtained by melting a larger cube of 384…
A closed metallic cylindrical box is 1.25 m high and its base radius is 35 cm. I
A closed metallic cylindrical box is 1.25 m high and its base radius is 35 cm. If the sheet metal costs Rs. 80 per…
A well with inner diameter 8 m is dug 14 m deep. Earth take out of its has been
A well with inner diameter 8 m is dug 14 m deep. Earth take out of its has been evenly spread all around it…
An iron pipe 20 cm long has exterior diameter equal to 25 cm. If the thickness o
An iron pipe 20 cm long has exterior diameter equal to 25 cm. If the thickness of the pipe is 1 cm, then the…
A semicircular sheet of paper of diameter 28 cm is bent to cover the exterior su
A semicircular sheet of paper of diameter 28 cm is bent to cover the exterior surface of an open conical ice-cream cup. The depth…
In a right circular cone the radius of its base is 7 cm and its height is 24 cm.
In a right circular cone the radius of its base is 7 cm and its height is 24 cm. A cross-section is made through…
A sphere of maximum volume is cut out from a solid hemisphere of radius r. The r
A sphere of maximum volume is cut out from a solid hemisphere of radius r. The ratio of the volume of the hemisphere to…
If the surface area of two spheres are in the ratio of 4 : 25, then the ratio of
If the surface area of two spheres are in the ratio of 4 : 25, then the ratio of their volumes is :
A plot of land in the form of a rectangle has dimensions 240 m × 180 m. A drain
A plot of land in the form of a rectangle has dimensions 240 m × 180 m. A drain-let 10 m wide is dug…
The diameter of the iron ball used for the shot-put game is 14 cm. It is melted
The diameter of the iron ball used for the shot-put game is 14 cm. It is melted and then a solid cylinder of height…
If the areas of three adjacent faces of a rectangular block are in the ratio of
If the areas of three adjacent faces of a rectangular block are in the ratio of 2 : 3 : 4 and its volume…
A hemispherical bowl is 176 cm round the brim. Supposing it to be half full, how
A hemispherical bowl is 176 cm round the brim. Supposing it to be half full, how many persons may be served from it in…