A rectangular iron sheet is 12 meters long and 5 meters wide. Use this iron sheet to make a cylinder with no cover and bottom. What is the lateral area of this cylinder?
一张长方形铁皮长12米，宽5米，用这块铁皮做一个无盖无底的圆柱，这个圆柱的侧面积是多少．
<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<result>60</result>