Use a piece of paper with a length of 2 cm and a width of 6 cm to form a cylindrical paper tube. What is the lateral area of the cylindrical paper tube in square centimeters?
用一张长2厘米，宽6厘米的纸围成一个圆柱形纸筒，这个圆柱形纸筒的侧面积是多少平方厘米．
<gadget id="calculator">2 * 6</gadget>
<output>12</output>

<result>12</result>