Cut out the largest square out of a circular piece of paper with a diameter of 12 cm. What is the cut-out area in cm**2.
在一个直径为12cm的圆形纸片中，剪出一个最大的正方形，剪掉的面积是多少cm**2．
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36</gadget>
<output>113.04</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">12 * 3 * 2</gadget>
<output>72</output>

<gadget id="calculator">113.04 - 72</gadget>
<output>41.04</output>

<result>41.04</result>