The internal and external diameters of a hollow hemispherical vessel are \(26 \ cm\) and \(32 \ cm\), respectively. Find the cost to paint the vessel all over at \(₹0.14\) per \(cm^2\).
Answer:
Total surface area of a hollow hemisphere is given by sq. units
Total surface area of a hollow hemisphere \(=\) \(cm^2\)
The cost to paint the vessel \(=\) \(₹\)
[Note: Enter your answer up to two decimal places]