The circumference of a circle is 3. 14*4= 12.56 cm, which is also the length of a rectangle.

18.56/2-12.56 = 3.28 cm, which is the width of a rectangle.

Circular area: 3.14 * 2 * 2 =12.56cm2.

Rectangular area:12.56 * 3.28 = 41.1968cm2.

Therefore, the surface area of cylinder = 41.1968+12.56 * 2 = 66.3168 cm2.