The roller of the road roller is a cylinder with a length of 1.8 meters and a diameter of 1.2 meters at the bottom. How many square meters can the roller roll on the road for one week?
压路机的滚筒是一个圆柱，长1.8米，底面直径1.2米．滚筒滚动一周能压路面多少平方米？
<gadget id="calculator">3.14 * 1.2 * 1.8</gadget>
<output>6.7824</output>

<result>6.7824</result>