Cut the largest circle out of a rectangle whose length is 6 cm and width is 4 cm. What is the area of the remaining part in square centimeters?
在一个长是6厘米，宽是4厘米的长方形中剪一个最大的圆，剩下的部分面积是多少平方厘米？
<gadget id="calculator">6 * 4</gadget>
<output>24</output>

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

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

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">24 - 12.56</gadget>
<output>11.44</output>

<result>11.44</result>