Q9 of 94 Page 227

The volume of a cylinder of height 8 cm is 1232 cm3. Find its curved surface area and the total surface area.

It is given in the question that,

Height of the cylinder = 8cm


And,


Volume of the cylinder =


Hence,


We can find the radius as,


r =


r =


r = √49


r = 7 cm


Now,


Curved surface area of the cylinder =


=


= 252 cm2


Therefore,


The total surface area of the cylinder =


=


= 2× 22× 15


= 660 cm2


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