Cut a board with a length of 3 and a width of 2 into the largest circle, what is the area of the circle?
把一个长为3、宽为2的木板裁成一个最大的圆，这个圆的面积是多少．
<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>