| Q.15 | A pillar 11 m in radius is 21 m high. How much material was used to construct it?(Use π=22/7) | |
| Ans | 1. 7989 m3 | |
| 2. 7886 m3 | ||
| 3. 7996 m3 | ||
| 4. 7986 m3 |
Correct Ans: 4
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