# A solid cylinder

Given,

Total surface area of cylinder = 231 cm2

Curved surface area =

= 2πrh + 2πr2 = 231

= 154 +2πr2 = 231

= 2πr2 = 77 = r2 =

= r =

And , 2πrh = 154

(put value of r )

=

= height = h = 7 cm

So, volume of cylinder = πr2h =

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