The perimeter of a square is equal to that of a circle. Given that the side length of the square is 9.42 meters, what is the radius of the circle in meters?
正方形与圆的周长相等，已知正方形的边长是9.42米，圆的半径是多少米．
<gadget id="calculator">4 / 3.14 / 2</gadget>
<output>0.636943</output>

<gadget id="calculator">9.42 * 0.636943</gadget>
<output>6.000003</output>

<result>6.000003</result>