What will be the curved surface area of cylinder having radius 20 cm and height 34 cm? (use $$\pi = 3.14$$)

A

3245.7 $$cm^{2}$$

B

4328..98 $$cm^{2}$$

C

4270.4 $$cm^{2}$$

D

4320.6 $$cm^{2}$$