The external and internal diameters of a hollow hemispherical vessel are 16 cm and 12 cm respectively. the cost of painting 1 sq cm of surface is rs 2. Find the cost of painting the vessel all over (pi= 22/7)
The external and internal diameters of a hollow hemispherical vessel are 16 cm and 12 cm respectively. the cost of painting 1 sq cm of surface is rs 2. Find the cost of painting the vessel all over (pi= 22/7)