A right cylinder just encloses a sphere of radius r as shown in the given figure. What is the ratio of surface area of sphere and curved surface area of the cylinder?

A right cylinder just encloses a sphere of radius r as shown in the gi

1.	A right cylinder just encloses a sphere of radius r as shown in the given figure. What is the ratio of surface area of sphere and curved surface area of the cylinder?
A.	2 : 1
B.	1 : 3
C.	\[1:\sqrt{2}\]
D.	1 : 1
Answer» E.

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A right cylinder just encloses a sphere of radius r as shown in the given figure. What is the ratio of surface area of sphere and curved surface area of the cylinder?

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