| Q.32 | Water flows out through a circular pipe with an internal diameter of 6 cm, at the rate of 12.6 km/h into an empty cylindrical tank whose base radius is 3 m. In 40 minutes, the water level in the tank will rise by (assuming no overflow): | |
| Ans | 1. 80 cm | |
| 2. 72 cm | ||
| 3. 84 cm | ||
| 4. 90 cm |
Correct Ans: 3