The volume of a cylinder having base radius 3 cm is 396 cm³. Find its curved surface area (in cm²). (Use $\pi =\frac{22}{7}$)

264

The correct answer is Option (3) → 264

Given,

Radius of the cylinder = 3 cm 

Volume of the cylinder = 396 cm³

We know that,

Volume of the cylinder = ∏r²h

∏r²h = 396 

\(\frac{22}{7}\) × 3² × h = 396

h = 14

Now the curved surface area of the cylinder = 2∏rh

2 × \(\frac{22}{7}\) × 3 × 14 = 264 cm²