A piece of rectangular paper is 12cm long and 8cm wide. Cut the largest circle out of this piece of paper. What is the area of this circle in cm**2.
一张长方形纸长12cm，宽8cm，在这张纸中剪一个最大的圆，这个圆的面积是多少cm**2．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<result>50.24</result>