The diameter of the rear wheel of the road roller is 1 meter, and the length is 1.25 meters. If the rear wheel can rotate 6 times per minute, how many square meters can be rolled per minute?
压路机的后轮直径是1米，长1.25米，如果后轮每分钟可转动6周，每分钟可压路多少平方米？
<gadget id="calculator">3.14 * 1 * 1.25 * 6</gadget>
<output>23.55</output>

<result>23.55</result>