The diameter of the front wheels of a road roller is 6 decimeters, and the distance between the two front wheels is 2 meters. If it turns 3 times per minute, what is the area it presses down per minute?
一种压路机的前轮直径是6分米，两前轮之间相距2米．如果它每分转3周，它每分压路的面积是多少？
<gadget id="calculator">6 / 10</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">3.14 * (3/5) * 2 * 3</gadget>
<output>11.304</output>

<result>11.304</result>