A) \[\frac{108}{\pi }\,\,c{{m}^{3}}\]
B) \[108\,\pi \,c{{m}^{3}}\]
C) \[\frac{112}{\pi }\,\,c{{m}^{3}}\]
D) \[112\,\pi \,c{{m}^{3}}\]
Correct Answer: C
Solution :
[c] \[2\pi r=8\Rightarrow \,\,\,\pi r=4\] \[\Rightarrow r=\frac{4}{\pi }\] \[\therefore \,\,\,V=\frac{1}{3}\pi {{r}^{2}}h=\frac{1}{3}\pi \times \frac{4\times 4}{\pi \times \pi }\times 21=\frac{112}{\pi }cu.cm.\]
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