Volume of a Sphere
A solid cone of radius 5 cm and height 8 cm is melted and made into small spheres of radius 0.5 cm. The number of spheres formed will be
The surface area of a solid metallic sphere is 616 cm2. It is melted and recast into a smaller sphere of diameter 3.5 cm. How many can such spheres be obtained?
27 spherical iron balls of radius 5 cm each are melted and recasted into a big sphere.The radius of the single big sphere(in cm) is______.
A hemisphere is melted and used some part of it to make a right circular cone whose radius and height are equal to the radius of the hemisphere. The volumes of hemisphere and cone are in the ratio 4:1.
- 799 cm3
- 765.45 cm3
- 735.91 cm3
- 700 cm3
A solid sphere with centre 'O' of certain radius fits exactly into a right circular cone as shown in the diagram given below. If the volume of the sphere is 4186.67 cm3, find the total surface area of the cone. (Take π = 3.14). It is known that slant height of the cone is two times the radius of the base of the cone and the ratio of AO to DO is 2:1.
Among a cylinder (of radius r and height h=r), a cone (of radius r and height h=r) and a sphere of radius r the
Volume of a sphere is directly proportional to the