The internal and external diameter of a hollow hemispherical vessel are 20 cm and 28 cm respectively. Find the cost of painting the vessel all over at 35 paise by `cm^(2)`

The internal and external diameters of a hollow hemispherical vessel are 20 cm and 28 cm respectively. Find the cost to paint the vessel all over at Rs. 0.14 per cm^(2) .

The internal and external diameters of a hollow hemispherical vessel are 24 cm and 25 cm respectively. Find the cost of painting the vessel all over, at the rate of 5 paise per sq.cm.

The internal and external diameters of a hollow hemi spherical vessel are 20 cm and 28 cm, respectively. Find the cost of painting the vessel at the rate of 14 paise per cm^(2) .

The internal and external diameters of a hollow hemi spherical vessel are 20 cm and 28 cm, respectively. Find the cost of painting the vessel at the rate of 14 paise per cm^(2) .

The internal and external diameters of a hollow hemispherical vessel are 21 cm and 28 cm respectively. Find : volume of material of the vessel.

The internal and external diameters of a hollow hemispherical vessel are 21 cm and 28 cm respectively. Find : total surface area,

The internal and external diameters of a hollow hemispherical vessel are 21 cm and 25.2 cm respectively. Find the cost of painting it, all over, at the rate of 1.50 per cm^(2).

The internal and external diameters of a hollow hemispherical vessel are 21 cm and 28 cm respectively. Find : internal curved surface area,

The internal and external diameters of a hollow hemispherical vessel are 21 cm and 28 cm respectively. Find : external curved surface area,