Cut out the largest circle from a rectangular piece of paper with a length of 3dm and a width of 2dm. What is the area of the circle in dm**2.
从一张长3dm、宽2dm的长方形纸片中剪下一个最大的圆，圆的面积是多少dm**2．
<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1</gadget>
<output>3.14</output>

<result>3.14</result>