Question
A rectangular swimming pool is 25 meters long, 10 meters
wide, and 2 meters deep. Find the cost of tiling the walls and floor at ₹200 per square meter.Solution
Area of the floor = Length × Breadth = 25 × 10 = 250 m². Area of the two longer walls = 2 × (Length × Depth) = 2 × (25 × 2) = 100 m². Area of the two shorter walls = 2 × (Breadth × Depth) = 2 × (10 × 2) = 40 m². Total area = 250 + 100 + 40 = 390 m². Cost = 390 × ₹200 = ₹78,000. Correct answer: b) ₹78,000
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