If the factory wants to produce 100 cylindrical ventilation pipes with a length of 8 meters and a diameter of 0.6 meters, how many square meters of iron sheets are needed?
工厂要生产100节长8米，直径0.6米的圆柱形通风管，需要多少平方米铁皮？
<gadget id="calculator">3.14 * 0.6 * 8 * 100</gadget>
<output>1_507.2</output>

<result>1_507.2</result>