A) 3
B) 4
C) 6
D) 8
Correct Answer: C
Solution :
Let the radius of cylindrical rod be r. Then its height will be 8r. \[\therefore \] Volume of cylindrical rod \[=\pi \,{{r}^{2}}.\,8r=8\,\pi \,{{r}^{3}}\] Since the radius is same, therefore volume of one spherical ball \[=\frac{4}{3}\,\pi .{{r}^{3}}\] \[\therefore \] Number of balls \[=\frac{\frac{8\pi {{r}^{3}}}{4\pi \,{{r}^{3}}}}{3}=6\]
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