A hollow sphere of internal and external radii respectively, 2cm and 4 – McqOptions

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1.	A hollow sphere of internal and external radii respectively, 2cm and 4cm is melted into a solid cone of base radius 4 cm. Find the height of the cone.
A.	12cm
B.	7cm
C.	14cm
D.	21cm
Answer» D. 21cm

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