A cylindrical pencil has a base diameter of 1 cm and a length of 20 cm. What is the area in square centimeters painted by this pencil?
一支圆柱形铅笔，底面直径是1cm，长是20cm，这支铅笔刷漆的面积是多少平方厘米？
<gadget id="calculator">3.14 * 1 * 20</gadget>
<output>62.8</output>

<result>62.8</result>