# CBSE Class 9 Maths Volume: Sphere And Hemisphere

## Videos

- The volume of sphere varies directly as the cube of its radius and the volume of sphere is 36π cubic centimetre.find the volume of sphere, when the diameter is doubled.
- A hemispherical bowl of internal diameter 36cm contains a liquid is to be filled in a cylindrical bottles of radius 3cm and height 6cm.How many bottles are required to empty the bowl
- A bead is made up of metal of radius 2 cm. If the density of the metal is 10.5 gm/cm
^{3}, calculate the mass of the bead. - Find the volume of a hemispherical vessel whose total surface area is 462 cm
^{2}. - Find the height of a cone of radius 30 cm which is formed by melting a sphere of radius 30 cm.
- Find the capacity of a hemispherical vessel, if circumference of its top is 308 cm.
- The surface area of a sphere is 5544 cm
^{2}. Calculate its volume. - Find the volume of a hemisphere whose curved surface area is 24948 cm
^{2}. - A tomb is in the form of a cylinder surmounted by a hemisphere. The radius and height of the cylindrical portion are 10.5 m and 9 m. calculate its volume.
- If the density of metal is 8.4 gm/dm
^{3}, calculate the mass of a metallic sphere of radius 0.5 dm.

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