Cut out the largest circle on a piece of rectangular paper with a width of 3 decimeters and a length of 4 decimeters, what is the area of the circle in square decimeters
在一张宽3分米、长4分米的长方形纸上剪去一个最大的圆，圆的面积是多少平方分米
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) ** 2</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">3.14 * (9/4)</gadget>
<output>7.065</output>

<result>7.065</result>