The front wheel of a road roller is cylindrical, with a wheel width of 2m and a diameter of 1.6m. How many meters has the front wheel moved forward by two turns?
一台压路机的前轮是圆柱形，轮宽2m，直径1.6m．前轮转动两周，前进了多少米？
<gadget id="calculator">3.14 * 1.6 * 2</gadget>
<output>10.048</output>

<result>10.048</result>