Make a section of ventilation pipe with iron sheet. Its length is 60 cm, and the radius of the bottom circle is 5 cm. How many square centimeters of iron sheet are needed to make one section of ventilation pipe?
用铁皮制作1节通风管，它的长是60厘米，底面圆的半径是5厘米，制作1节通风管至少需要铁皮多少平方厘米？
<gadget id="calculator">2 * 3.14 * 5 * 60</gadget>
<output>1_884</output>

<result>1_884</result>