The roller of the road roller is a cylinder, its length is 2 meters, and the radius of the cross section of the roller is 0.6 meters. If it rotates 5 times per minute, how much road surface can be pressed per minute? (π takes 3.14)
压路机的滚筒是圆柱体，它的长是2米，滚筒横截面的半径是0.6米．如果每分转动5周，每分可以压多大的路面？(π取3.14)
<gadget id="calculator">0.6 * 2</gadget>
<output>1.2</output>

<gadget id="calculator">3.14 * 1.2 * 2 * 5</gadget>
<output>37.68</output>

<result>37.68</result>