A solid cylinder has a total surface area of 231 cm sup2 Its curved surface area is 2 3 of the total...........

Quantitative Aptitude (Pb Patwari) Mensuration 3D

A solid cylinder has a total surface area of 231 cm² Its curved surface area is 2/3 of the total surface area. Find the volume of the cylinder.

332 cm²

269.5 cm²

314.2 cm²

32 cm²

2r (h + r) = 231 ….(i)

CSA of cylinder =

= 154 cm²

2rh = 154 …..(ii)

Substituting (ii) in (i)

2rh + 2r² = 231

154 + 2r² = 2312

r² = 231 - 154 = 77

= 269.5 cm³

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