Cut the largest circle out of a square paper with a side length of 8 cm. What is the area of the subtracted part?
从一张边长8厘米的正方形纸上剪出一个最大的圆，减去部分的面积是多少平方厘米？
<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<gadget id="calculator">64 - 50.24</gadget>
<output>13.76</output>

<result>13.76</result>