-
Water is flowing at the rate of 5 km/h through a pipe of diameter 14 cm into a rectangular tank which is 50 m long, 44m wide. The time taken (in hours) for the rise in the level of water in the tank to be 7 cm is
-
- 2
-
1 1 2
- 3
-
2 1 2
- 2
Correct Option: A
Water flowed by the pipe in 1 hour = πr²h
| = | × | × 5000 = 77 m | ||
| 7 | 100 × 100 |
| Volume of expected water in the tank = | = 154 m³ | |
| 100 |
| ∴ Required time = | = 2 hours | |
| 77 |
