The roller of a road roller is a cylinder with a diameter of 1 meter at the bottom and a length of 2 meters. Rolling 10 cycles per minute, how much area of road can be pressed in half an hour?
压路机的滚筒是一个圆柱体，它的底面直径是1米，长2米．每分钟滚动10周，半小时能压多大面积的路面？
<gadget id="calculator">3.14 * 1 * 2 * 10 * 30</gadget>
<output>1_884</output>

<result>1_884</result>