The front wheel of a road roller is cylindrical, the wheel width is 2m, and the diameter is 1.5m. How much area can the wheel press in one round?
一台压路机的前轮是圆柱形，轮宽2m，直径是1.5m，车轮前进一周可以压多大的面积？
<gadget id="calculator">3.14 * 1.5 * 2</gadget>
<output>9.42</output>

<result>9.42</result>