[" 13.A hollow cylindrical pipe is "21" decimetre long.Its outer and inner diameters are "10cm" and "],[6cm" respectively.Find the volume of the copper vessel in making the pipe."]

A hollow cylindrical pipe is 21 dm long. Its outer and inner diameters are 10 cm and 6 cm respectively. Find the volume of the copper used in making the pipe.

A hollow cylindrical pipe is 21 dm long. Its outer and inner diameters are 10 cm and 6 cm respectively. Find the volume of the copper used in making the pipe.

A hollow cylindrical pipe is 21dm long.It outer and inner diameters are 10cm and 6cm respectively.Find the volume of the copper used in making the pipe.

A hollow cylindrical pipe is 21 dm long. It outer and inner diameters are 10cm and 6cm respectively. Find the volume of the copper used in making the pipe.

A hollow cylindrical pipe is 21dm long.Its outer and inner diameters are 10cm and 6cm respectively.Find the volume of the copper used in making the pipe.

A hollow cylindrical tube 20 cm long is made of iron and its external and internal diameters are 8 cm and 6 cm respectively. The volume (in cubic cm) of iron used in making the tube is (Taken pi=22//7 )

A hollow cylindrical pipe is made of iron. Its external and internal radii are 8 cm and 7 cm respectively and it is 35 cm long. If 1 cm^3 iron weight 8g, then the weight of the pipe is.

The internal and external diameters of a hollow hemispherical vessel are 21 cm and 28 cm respectively. Find : volume of material of the vessel.

The outer diameter of a spheircal shell is 10 cm and the inner diameter is 9 cm. find the volume of the metal contained in the shell.

The outer and inner diameters of a circular pipe are 6 cm and 4 cm respectively. If its length is 10 cm, then what is the total surface area in square centimeters ?