The radius of a cylindrical tank is 7 m and its height is 21 m. Its inner surface (curved and base) is fully painted. On the outer surface, the remaining curved surface is painted except a 1 m wide horizontal strip along the upper edge; the outer base is also painted. Use π = 22/7. The rate of painting on the inner surface is ₹5 per m² and on the outer surface ₹7 per m². What will be the total painting cost? [π printed as a stacked 22/7 fraction in the original source; reproduced here in linear form]

Subject: Mathematics | Topic: Trigonometry | Difficulty: MEDIUM

Options

1. (A) ₹12,628
2. (B) ₹12,672
3. (C) ₹12,760
4. (D) ₹12,716

Verified Answer

Option (A): ₹12,628

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