The circumference of the cross-section of the roller is 3.14 meters, and the length is 2 meters. If it rotates 60 times per minute, what is the rolling area of the roller per minute?
压路机滚筒横截面的周长是3.14米，长是2米，如果每分转60周，压路机每分钟的压路面积为多大？
<gadget id="calculator">3.14 * 2 * 60</gadget>
<output>376.8</output>

<result>376.8</result>