The front wheel of a road roller is cylindrical, with a width of 2 meters and a diameter of 1.2 meters. The front wheel rolls 3 times. How many square meters is the rolling area?
一台压路机的前轮是圆柱形，轮宽2米，直径1.2米，前轮滚动3周，压路面积为多少平方米？
<gadget id="calculator">3.14 * 2 * 1.2</gadget>
<output>7.536</output>

<gadget id="calculator">7.536 * 3</gadget>
<output>22.608</output>

<result>22.608</result>