The hemispherical dome of a building needs to be painted (see fig 1). If the circumference of the base of dome is 17.6 m, find the cost of painting it, given the cost of painting is Rs.5 per `100 cm^(2)`.

A solid is composed of a cylinder with hemi-spherical ends. If the whole length of the solid is 104 cm and the radius of each of the hemi-spherical ends is 7 cm, find the cost of polishing its surface at the rate of Rs. 10 per cm^2

A storage tank consists of a circular cylinder with a hemisphere stuck on either end. If the external diameter of the cylinder be 1.4 m. and its length be 8 m. Find the cost of painting it on the outside at rate of Rs. 20 per m^(2) .

The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find The cost of plastering this curved surface at the rate of Rs. 40 per m^(2) .

tent is in the form of a cylinder surmounted by a cone having its diameter of the base equal to 24 m. The height of cylinder is 11 m and the vertex of the cone is 5m above the cylinder. Find the cost of making the tent, if the rate of canvas is Rs. 10 per m^(2)

A round table top has six equal diesigns as shown in the radius of the table top is 14 cm , find the cost of making the designs with point at the rate Rs 5 per "cm"^(2) . (Use sqrt(3)=1.732)

A cylindrical box of radius 7m, height of 5 m is to be made. Determine the area of the sheet required for making the closed box and also find the cost of the sheet required, if it costs Rs. 30 per 1 m^2 .

A path 5m wide runs around a square park of side 100m find the area of the path. Also find the cost of cementing it at the rates of ₹250 per 10m^2 .

Find the cost of painting of the outer surface of a closed box which is 60 cm long 40 cm broad and 30 cm high at the rate of 50 paise per 20 cm^2 .

The floor of a building consists of 3000 tiles which are rhombus shaped. The diagonals of each of the tiles are 45cm and 30 cm. find the total cost of polishing the floor, if cost per m^2 is ₹2.50.