wire can form a circle with a radius of 6 cm. If the wire is re-enclosed into a square, what is the side length of the square?
一根铁丝可以围成一个半径是6厘米的圆．如果把这根铁丝重新围成一个正方形，这个正方形的边长是多少厘米？
<gadget id="calculator">6 / 4</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">3.14 * 2 * (3/2)</gadget>
<output>9.42</output>

<result>9.42</result>