A bucket made of aluminium sheet is of height 20 cm and its upper and lower ends are of radius 25 cm and 10 cm respectively. Find the cost of making the bucket if the aluminium sheet costs Rs 70 per `100\ c m^2` . (Use `pi=3. 14` )

A bucket made up of a metal sheet is in the form of a frustum of a cone of height 16 cm with diameters of its lower and upper ends as 16 cm and 40 cm respectively. Find the volume of the bucket. Also, find the cost of the bucket if the cost of metal sheet used is Rs 20 per 100\ c m^2 . (Use pi=3. 14 )

A bucket is of height 25 cm. Its top and bottom radii are 20 cm and 10 cm respectively. Its capacity in litres is

A bucket open at the top,and made up of a metal sheet is in the form of a frustum of a cone.The depth of the bucket is 24cm and the diameters of its upper and lower circular ends are 30cm and 10 cm respectively.Find the cost of metal sheet used in it at the rate of Rs 10 per 100cm^(2) .

The slant height and base diameter of a conical tomb are 25m and 14m respectively. Find the cost of white-washing its curved surface at the rate of Rs 210 per 100m^(2)

An open metal bucket is in the shape of a frustum of cone of height 21 cm with radii of its lower and upper ends are 10 cm and 20 cm respectively. Find the cost of milk which can completely fill the bucket at the rate of रु 40 per litre.

A container made of a metal sheet open at the top is the form of frustum of the cone, whose height is 16 cm and the radii of its lower and upper circular edges are 8 cm and 20 cm respectively. Find (i) the cost of metal sheet to make the container if it costs ₹ 10 per 100 cm^(2) (ii) the cost of milk at the rate of ₹ 35 per litre which can fill it completely.

The slant height and base diameter of a conical tomb are 25m and 14m respectively. Find the cost of white-washing its curved surface at the rate of Rs.210 per 100m^(2)

An open metal bucket is in the shape of a frustum of a cone of height 21cm with radii of its lower and upper ends as 10cm and 20cm respectively.Find the cost of milk which can completely fill the bucket at Rs.30per litre.

A bucket made up of a metal sheet is in the form of frustum of a cone. Its depth is 24 cm and the diameters of the top and bottom are 30 cm and 10 cm respectively. Find the cost of milk which can completely fill the bucket at the rate of ₹ 20 per litre adn the cost of metal sheet used if it costs ₹ 10 per 100cm^(2) . [ Use pi=3.14 .]