A grain silo has the shape of a right circular cylinder surmounted by a hemisphere (see the figure) .If the silo is to have a capacity of
, find the radius and height of the silo that requires the least amount of material to construct. Hint: The volume of the silo is
, and the surface area (including the floor) is
. 
A) 
B) 
C) 
D) 
Correct Answer:
Verified
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