1.

A hollow spherical ball whose inner radius is 4 cm is fall of water. Half of the water is transferred to a conical cup and it completely filled the cup. If the height of the cup is 2 cm, then the radius of the base of cone, in cm is

A. 4cm                            
B.  \[6\frac{1}{2}cm\]
C. 8cm                   
D. 16cm
Answer» D. 16cm


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