Surface area and volumes

Front

In a right circular cone, the cross section made by a plane parallel to the base is a...

Back

Circle

Front

A solid piece of iron in the form of a cuboid of dimensions (49 cm × 33 cm × 24 cm) is moulded to form a solid sphere. What is the radius of the sphere?

Back

21 cm

Front

The radius (in cm) of the largest right circular cone that can be cut out from a cube of edge 4.2 cm is

Back

2.1

Front

A metallic solid sphere of radius 9 cm is melted to form a solid cylinder of radius 9 cm. What is the height of the cylinder?

Back

12 cm

Front

A rectangular sheet of paper 40 cm × 22 cm is rolled to form a hollow cylinder of height 40 cm. What is the radius of the cylinder (in cm)?

Back

3.5

Front

Number of solid spheres (diameter 6 cm) from a melted metal cylinder (height 45 cm, diameter 4 cm)

Back

5

Front

Surface area of a sphere is 616 cm². Find its diameter (in cm).

Back

14

Front

A hollow metallic sphere with external diameter 8 cm and internal diameter 4 cm is melted and moulded into a cone having base radius 4 cm. What is the height of the cone?

Back

14 cm

Front

A metallic cone with base radius 2.1 cm and height 8.4 cm is melted and moulded into a sphere. What is the radius of the sphere?

Back

2.1 cm

Front

Slant height of cone

Back