The cost of painting the total outside surface of a closed cylindrical oil tank at 50 paise per square decimetre is Rs. 198. The height of the tank is 6 times the radius of the base of the tank. Find the volume corrected to 2 decimal places.

Explanation

To solve the problem, we need to find the volume of a closed cylindrical oil tank given the cost of painting its surface and the relationship between its height and radius. Here’s a step-by-step solution:

### Step 1: Understand the relationship between height and radius
Given that the height (h) of the tank is 6 times the radius (r) of the base:
\[ h = 6r \]

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