The front wheel of a road roller is cylindrical, the width of the wheel is 2m, and the diameter is 1.4m. The front wheel rotates twice. What is the area of the road in square meters?
一台压路机的前轮是圆柱形，轮宽2m，直径1.4m，前轮转动两周，压路的面积是多少平方米？
<gadget id="calculator">3.14 * 1.4 * 2 * 2</gadget>
<output>17.584</output>

<result>17.584</result>