A cylindrical can with a height of 3 decimeters, a bottom radius of 0.8 decimeters, and a label on the side. What is the area of the label?
一个圆柱形罐头盒，高3分米，底面半径0.8分米，侧面贴商标纸，商标纸的面积有多大？
<gadget id="calculator">3.14 * 0.8 * 2 * 3</gadget>
<output>15.072</output>

<result>15.072</result>