A solid metallic sphere of radius 15 cm is melted and recast into sphe – McqOptions

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1.	A solid metallic sphere of radius 15 cm is melted and recast into spherical balls of radius 3 cm each. What is the ratio of the surface area of original sphere and sum of the surface areas of all the balls?
A.	1 : 10
B.	1 : 5
C.	5 : 27
D.	3 : 40
Answer» C. 5 : 27

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