Find the volume of a cubical box if the cost of painting its outer surface is Rs 1440 at the rate of Rs 15 per sq.m.

The outer diameter of a pipe is 70 cm and it is 21 m long. Find the cost of painting the outer surface of the pipe at the rate of Rs 10 per square metre

The outer diameter of a drainage pipe is 1 m and it is 21 m long. Find the cost of painting the outer surface of the pipe at the rate of Rs 5 per m^2 .

The outer diameter of a drainage pipe is 1 m and it is 21 m long. Find the cost of painting the outer surface of the pipe at the rate of Rs 5 per m^2 .

External dimensions of a closed wooden box are in the ratio 5:4:3. If the cost of painting its outer surface at the rate of Rs 5 per dm^2 is Rs 11,750, find the dimensions of the box.

The dimension of a cuboidal box are 6mxx400cmxx 1.5m . Find the cost of painting its entire outer surface at the rate of Rs. 22 per m^(2)

The diameter of a hollow hemispherical lid is 7 m. Find the cost of painting outer surfaces of 10 such lids at the rate of Rs. 20 per m^(2) .

The diameter and height of a cylindrical water tank are 2 m and 14 m respectively. Find the cost of painting its outer curved surface at the rate of Rs. 20 per m^(2) .

The diameter and height of a cylindrical water tank are 2 m and 14 m respectively. Find the cost of painting its outer curved surface at the rate of Rs. 20 per m^(2) .

A cylindrical pillar is 50 cm in diameter and 3.5 m in height. Find the cost of painting the curved surface of the piller at the rate of Rs10 per sq. m.