A cylindrical vessel, without lid, has to be tin-coated on its both sides. If the radius of the base is 70cm and its height is 1.4m, calculate the cost of tin-coating at the rate of Rs. 3.50 per `1000\ c m^2`

A wooden toy is in the form of a cone surmounted on a hemisphere. The diameter of the base of the cone is 5cm and its height is 4cm. Find the cost of painting the toy at the rate of Rs. 5 per 1000c m^2dot

A wooden toy is in the form of a cone surmounted on a hemisphere. The diameter of the base of the cone is 6cm and its height is 4cm. Find the cost of painting the toy at the rate of Rs. 5 per 1000cm

Twenth cylindrical pillars of the Parliament House are to be cleaned. If the diameter of each pillar is 0.50 cm and height is 4m. What will be the cost of cleaning them at the rate of Rs. 2.50 per square metre?

Twenty cylindrical pillars of the Parliament House are to be cleaned. If the diameter of each pillar is 0.50m and height is 4m. What will be the cost of cleaning them at the rate of Rs. 2.50 per square metre?

Twenty cylindrical pillars of the Parliament House are to be cleaned. If the diameter of each pillar is 0.50m and height is 4m. What will be the cost of cleaning them at the rate of Rs. 2.50 per square metre?

A path 1 m wide is built inside a square park of side 30 m along its sides. Find the area of the path. Calculate the cost of constructing the path at the rate of Rs 70 per m^2

The dome of a building is in the form of a hemisphere. Its radius is 63m. Find the cost of painting it at the rate of Rs. 2 per sq.m.

The dome of a building is in the form of a hemisphere. Its radius is 63dm. Find the cost of painting it at the rate of Rs. 2 per sq.m.

A liquid is kept in a cylindrical vessel which is rotated along its axis. The liquid rises at the side. If the radius of the vessel is 5 cm and the speed of rotation is 4 rev//s , then the difference in the height of the liquid at the centre of the vessel and its sides is

A liquid is kept in a cylindrical vessel which is rotated along its axis. The liquid rises at the side. If the radius of the vessel is 5 cm and the speed of rotation is 4 rev//s , then the difference in the height of the liquid at the centre of the vessel and its sides is