Draw the largest circle on a square of paper with a side length of 10 cm. What is the circumference of this circle in cm?
在边长为10厘米的正方形纸上画一个最大的圆，这个圆的周长是多少厘米？
<gadget id="calculator">3.14 * 10</gadget>
<output>31.4</output>

<result>31.4</result>