An iron pillar consists of a cylindricla portion 2.8 m high and 20 m in diamter and a cone 42 cm. high is surmounting it. Find the weight of the pillar, given that `1cm^3` of iron weights 7.5 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)

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)

A solid rectangular piece of iron measures 2.5 m by 1.2 m by 1 cm. Find the weight of this piece, if 1 cubic cm of iron weighs 8 grams.

A cylinderical pillar is 50 cm in diameter and 3.5 m in height. Find the cost of white washing the curved surface of the pillar at the rate of Rs 12.50 per m^2 .

A cylindrical pillar is 50 cm in diameter and 3.5 m high. Find the cost of white washing its curved surface at the rate of Rs 40 per m^2 .

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 .

In the Fig., solid consists of a cylindrical section of length 6.5 cm and surmounted by a cone at one end, a hemisphere at the other end. Given that common radius is 3.5 cm and the total height of solid is 12.8 cm find the volume of solid