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Water flows through a cylindrical pipe, whose radius is 7 cm, at 5 metre per second. The time, it takes to fill an empty water tank, with height 1.54 metres and area of the base (3 × 5) square metres, is (take π = 22/7)
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- 6 minutes
- 5 minutes
- 10 minutes
- 9 minutes
- 6 minutes
Correct Option: B
Volume of the tank = (3 × 5 × 1.54) cu.metre
Volume of water flowing through pipe per second
| = π × |  |  | ² | × 5 m³ | |
| 100 |
| ∴ Required time = | = 300 second = 5 minutes | |
| 22 × 7 × 7 × 5 |
