The diameter of a metallic ball is 42 cm. What is the mass of the ball, if the metal weighs 8.9 g per `cm^3` ?

A piece of metal pipe is 77 cm long, the inside diameter of a cross-section is 4 cm and the outside diameter is 4.5 cm. If the metal weighs 8 g per cm^3 , what is the weight of piece of pipe ?

The thicknes of a metallic tube is 1 cm and the inner diameter of the tube is 12 cm. Find the mass of 1 m long tube, if the density of the metal be 7.8 g//cm^3 .

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.

Find the weight of a solid cone whose base is of diameter 14 cm and vertical height 51 cm, supporting the material of which it is made weighs 10 grams per cubic cm.

A shot-putt is a metallic sphere of radius 4.9 cm. If the density of the metal is 7.8 g per cm^3 , find the mass of the shot-putt.

A solid iron pole consists of a cylinder of height 220 cm and base diameter 24 cm, which is surmounted by another cylinder of height 60 cm and radius 8 cm. Find the mass of the pole, give that 1 cm^3 of iron has approximately 8g mass. (Use pi = 3.14)

The inner diameter of a cylindrical wooden pipe is 24 cm and its out diameter is 28 cm. The length of the pipe is 35 cm. Find the mass of the pipe, if 1 cm^3 of wood has a mass of 0.6 g.

A solid iron pole consists of a cylinder of height 220 cm and base diameter 24 cm, which is surmounted by another cylinder of height 60 cm and radius 8 cm. Find the mass of the pole, given that 1 cm^3 of iron has approximately 8 g mass. (Use pi = 3.14)