A joker’s cap is in the form of a right circular cone of base diameter 40 \(cm\) and height 21 \(cm\). Find the cost of the paper to make the joker’s cap, if the cost of \(100 \ cm^2\) canvas is \(₹\)200.
\((\)Use \(\sqrt{3} = 3.143)\)
Cost of the paper to make the joker’s cap \(=\) \(₹\)
[Note: Round off your cost to the whole number]