Radius of hemisphere is twice that of a sphere. What is the ratio of t – McqOptions

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1.	Radius of hemisphere is twice that of a sphere. What is the ratio of total surface area of hemisphere and sphere?
A.	3 : 1
B.	12 : 1
C.	4 : 1
D.	6 : 1
Answer» B. 12 : 1

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