After the front wheel of a cylindrical road roller rotates for 10 revolutions, the area covered by it is 47.1m**2, and the wheel width is 1.5m. What is the radius of the front wheel in meters?
一个圆柱体行压路机前轮转动10周后压过的面积是47.1m**2，轮宽1.5米，前轮的半径是多少米？
<gadget id="calculator">47.1 / 10 / 1.5 / 3.14 / 2</gadget>
<output>0.5</output>

<result>0.5</result>