A solid sphere of radius 9 cm is melted to form a sphere of radius 6 c – McqOptions

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1.	A solid sphere of radius 9 cm is melted to form a sphere of radius 6 cm and a right circular cylinder of same radius. The height of the cylinder so formedÂ is
A.	19 cm
B.	21 cm
C.	23 cm
D.	25 cm
Answer» B. 21 cm

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