When deriving the formula for the area of a circle, divide the circle into several equal parts and put together an approximate rectangle. It is known that the length is 8.56 cm larger than the width. What is the area of the circle in cm**2.
在推导圆的面积公式时，将圆等平均分成若干份，拼成一个近似的长方形，已知长比宽多8.56cm，圆的面积是多少cm**2．
<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<result>50.24</result>