Radius of hemisphere is thrice than that of a sphere. What is the rati – McqOptions

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1.	Radius of hemisphere is thrice than that of a sphere. What is the ratio of total surface area of hemisphere to that of sphere?
A.	27 : 8
B.	21 : 4
C.	27 : 4
D.	6 : 1
Answer» D. 6 : 1

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