Mensuration · Question 23 · Medium
A room is 6 m long, 4 m wide and 3 m high. What is the cost of painting its four walls at ₹15 per m²? (Ignore doors and windows.)
- ₹900
- ₹1,620
- ₹1,080
- ₹1,260
Answer and explanation
Answer: A. ₹900
Explanation: Area of four walls = 2 × (6 + 4) × 3 = 60 m². Cost = 60 × 15 = ₹900.
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