A cylindrical iron ventilator is made from a rectangular iron sheet with a length of 8 decimeters and a width of 6 decimeters. What is the maximum side area of this cylinder? (interface not counted)
用一张长8分米，宽6分米的长方形铁皮制成一个圆柱形铁皮通风筒，这个圆柱的侧面积最多是多少平方分米．(接口处不计)
<gadget id="calculator">8 * 6</gadget>
<output>48</output>

<result>48</result>