cylindrical pencil with a base diameter of 0.8 cm and a length of 18 cm. What is the area in square centimeters that the pencil paints?
一种圆柱形铅笔，底面直径是0.8cm，长18cm．这支铅笔刷漆的面积是多少平方厘米？
<gadget id="calculator">3.14 * 0.8 * 18</gadget>
<output>45.216</output>

<result>45.216</result>