Answer: Rs. 6336
r = 60 cm, h = 84 cm. Area covered in one rotation = curved surface area:
\[2\pi rh=2\times\frac{22}{7}\times60\times84=31680\ \text{cm}^2\]
\(=3.168\) m². In 200 rotations: \(3.168\times200=633.6\) m².
Cost \(=633.6\times10=\) Rs. 6336.