A) 18
B) 20
C) 21
D) 23
Correct Answer: C
Solution :
Clearly, radius of base of cone B = 2 cm \[205c{{m}^{2}}\] Height of cone \[=\sqrt{{{3}^{2}}-{{2}^{2}}}=\sqrt{5}\,cm\] Let the number of spheres = n. \[295c{{m}^{2}}\] volume of l sphere = volume of cylinder A + volume of cone B \[\Delta ABC\] \[128c{{m}^{2}}\] \[112c{{m}^{2}}\] \[118c{{m}^{2}}\]
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