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A pillar 11 m in radius is 21 m high. How much material was used to construct it?(Use π=22/7) |
7996 m3 7886 m3 7989 m3 7986 m3 |
7986 m3 |
We know that, Volume of a cylinder = πr2h Given, Radius of the pillar = 11 m Height of the pillar = 21 m So, according to the question, Material used = \(\frac{22}{7}\)× 112 × 21 = 22 × 121 × 3 = 7986 m3 |
