A sector of radius 12 centimetres and centrals angle `120^@` is rolled up into a cone.
What is the slant height of the cone?

A sector of a circular is of radius 12 cm and angle 120^(@) . It is rolled up so that two bounding radii are joined together to form a cone. Find the volume of the cone.

The perimeter of sector of a circle of radius 7cm and central angle 45^@ is

What is the area of the sector with central angle 120^@ ?

A hollow sphere of internal and external radii 2 cm and 4 cm respectively is melted into a cone of base radius 4 cm. find the height and the slant height of the cone.

A hollow sphere of internal and external radii 4 cm and 8 cm respectively is melted into a cone of base radius 4 cm. calculate the height of the cone.

A metallic sphere of radius 10.5 cm is melted and recast into a number of smaller cones each of radius 3.5 cm and height 3 cm. find the number of cones thus formed.

The volume of a right circular cone is 9856 cm. If the diameter of the base is 28 cm. Find (i) the height of the cone (ii) slant height of the cone (iii) curved surface area of the cone