Answer :

It is given in the question that,

The ratio of radius and height is 7 : 2


This means that,




r =


Now,


We can find the volume of the cylinder as:


Volume of the cylinder =


8316 =


8316 =



h3 = 216


h = 6


Hence,


Radius, r =


=


= 21 cm


Therefore,


Total surface area of the cylinder =


=


= 2× 22× 3× 27


= 3564 cm2


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