Using a piece of rectangular paper with a length of 8 cm and a width of 6 cm, after cutting a circle as large as possible, what is the area of the remaining part in square centimeters?
用一张长8厘米，宽6厘米的长方形纸，剪一个尽可能大的圆后，剩下部分的面积是多少平方厘米？
<gadget id="calculator">6 * 8</gadget>
<output>48</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">48 - 28.26</gadget>
<output>19.74</output>

<result>19.74</result>