The front wheel of a road roller is a cylinder with a width of 2m and a diameter of 1.2m. If it rotates 10 revolutions per minute, how many square meters will this road roller roll per minute?
一台压路机的前轮是圆柱体，轮宽2m，直径1.2m．如果它每分钟转动10圈，这辆压路机每分钟压路多少平方米？
<gadget id="calculator">3.14 * 1.2</gadget>
<output>3.768</output>

<gadget id="calculator">3.768 * 2</gadget>
<output>7.536</output>

<gadget id="calculator">7.536 * 10</gadget>
<output>75.36</output>

<result>75.36</result>