Cut out the largest circle with a circumference of 18.84 cm from a piece of square paper, what is the area of the cut confetti?
从一张正方形纸上剪下一个周长是18.84厘米的最大圆，求被剪掉的纸屑的面积？
<gadget id="calculator">18.84 / 3.14</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>