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A cylindrical tank of diameter 35 cm is full of water. If 11 litres of water is drawn off, the water level in the tank will drop by : (use π = 22/7)
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10 1 cm. 2
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12 6 cm. 7 - 14 cm.
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11 3 cm. 7
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Correct Option: D
Volume of water drawn from cylinder
| = πr²h = | × | × | × h | |||
| 7 | 2 | 2 |
| ∴ | × | × | × h = 110000 cm³ | |||
| 7 | 2 | 2 |
| ∴ h = | ||
| 22 × 35 × 35 |
| = | = 11 | cm. | ||
| 7 | 7 |
