The correct option is C 3168 cm2
Circumference of cylinder is C=2πr
It is given that the circumference of water tank is 264 cm, therefore,
C=2πr⇒264=2πr⇒r=2642π=132π
Now, curved surface area of cylinder is A=2πrh
Here, the radius is 132π cm and height is 12 cm.
Thus,
A=2πrh=2π×132π×12=2×132×12=3168 cm2
Hence, the curved surface area of cylindrical water tank is 3168 cm2.