Use a piece of rectangular paper with a length of 18 cm and a width of 8 cm to form the largest cylinder. What is the lateral area of the cylinder in square centimeters?
用一张长18厘米，宽8厘米的长方形纸围成一个最大的圆柱，圆柱的侧面积是多少平方厘米．
<gadget id="calculator">8 * 18</gadget>
<output>144</output>

<result>144</result>