The front wheel of a road roller is cylindrical, the width of the wheel is 1.5 meters, the diameter is 1.2 meters, and the front wheel rotates 4 times. What is the area of the road in square meters?
一台压路机的前轮是圆柱形，轮宽1.5米，直径是1.2米，前轮转动4圈，压路的面积是多少平方米．
<gadget id="calculator">3.14 * 1.2 * 4 * 1.5</gadget>
<output>22.608</output>

<result>22.608</result>