A) 64
B) 16
C) 12
D) 4
Correct Answer: A
Solution :
Volume of solid sphere \[=\frac{4}{3}\pi \times {{4}^{3}}\] Volume of one ball \[=\frac{4}{3}\pi \times {{1}^{3}}\] \[\therefore \] Required number of balls \[=\frac{\frac{4}{3}\pi {{.4}^{3}}}{\frac{4}{3}\pi {{.1}^{3}}}=64\]
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