The radius of the front wheel of a road roller is 5 decimeters. If the front wheel rotates 6 times per minute, it can turn from one end of the road to the other in ten minutes. How many meters is the total length of this road?
一台压路机前轮半径是5分米，如果前轮每分钟转动6周，十分钟可以从路的一端转到另一端，这条路全长多少米？
<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">3.14 * (1/2) * 2 * 6 * 10</gadget>
<output>188.4</output>

<result>188.4</result>