A) 5
B) 6
C) 8
D) 10
Correct Answer: A
Solution :
Radius of cylinder, \[{{r}_{1}}=2\,cm\] And height of cylinder, \[{{h}_{1}}=45\,cm\] \[\therefore \] Volume of cylinder \[=\pi {{2}^{2}}\times 45\] \[=180\pi \] Now, radius of sphere \[=3\,cm\] \[\therefore \] Volume of sphere \[=\frac{4}{3}\pi {{(3)}^{3}}\] \[=36\pi \] \[\therefore \] Number of required sphere \[=\frac{180\pi }{36\pi }=5\]
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