If the largest circle is cut off from a square with a perimeter of 24dm, what is the remaining area in dm**2.
在周长24dm的正方形内剪掉最大的圆，剩余的面积是多少dm**2．
<gadget id="calculator">24 / 4</gadget>
<output>6</output>

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

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

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9</gadget>
<output>28.26</output>

<gadget id="calculator">36 - 28.26</gadget>
<output>7.74</output>

<result>7.74</result>