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.Its 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.It outer and inner diameters are 10cm and 6cm respectively.Find the volume of the copper used in making the pipe.

The outer and inner diameters of a circular ring are 34 cm and 32 cm respectively. Find the area of the ring.

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 thickness of a hollow metallic cylinder is 2 cm. It is 70 cm long with outer radius of 14 cm. Find the volume of the metal used in making the cylinder, assuming that it is open at both the ends. Also find its weight if the metal weighs 8 g per cm^3 .

The thickness of a hollow wooden cylinder is 2cm. It is 35cm long and its inner radius is 12cm. Find the volume of the wood required to make the cylinder,assuming it is open at either end.