The front wheel of a road roller is 3 meters wide, the bottom diameter is 1.2 meters, and the front wheel rotates 12 times. What is the area of the road in square meters?
一台压路机的前轮宽3米，底面直径是1.2米，前轮转动12周，压路的面积是多少平方米？
<gadget id="calculator">3.14 * 1.2 * 3 * 12</gadget>
<output>135.648</output>

<result>135.648</result>