Mathematics · Mensuration
A thick cylindrical pipe of length 1.4 m open at both the ends has internal and external diameters 60 cm and 80 cm, respectively. It is to be painted from all sides. What will be the cost of painting (in ₹) if the rate of painting is ₹110 / m2? (Use π = 227)
- 1726✓
- 2712
- 3734
- 4748
Correct answer
726
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