The front wheel of a road roller is cylindrical, with a wheel width of 1.3 meters and a diameter of 1.2 meters. If the front wheel rotates once, what is the area of the road in square meters?
一台压路机的前轮是圆柱形，轮宽1.3米，直径1.2米，前轮转动一周，压路的面积是多少平方米？
<gadget id="calculator">3.14 * 1.3 * 1.2</gadget>
<output>4.8984</output>

<result>4.8984</result>