Cut a square with a side length of 6 cm into the largest circle, what is the circumference of the circle in cm (take 3.14 for π)
把一个边长为一个6cm的正方形剪成一个最大的圆，则圆的周长为多少cm(π取3.14)
<gadget id="calculator">3.14 * 6</gadget>
<output>18.84</output>

<result>18.84</result>