A closed right circular cylinder has a volume 2156 cubic units . Find the radius and height of the cylinder so that the total surface area is minimum.
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5
r=h
πr³= 2156
r³= (2156×7)/22
r³= 98×7
r³= 7×7×7×2
r=7( ³√2)
also h= 7( ³√2)
πr³= 2156
r³= (2156×7)/22
r³= 98×7
r³= 7×7×7×2
r=7( ³√2)
also h= 7( ³√2)
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16
heya....
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