Cut a circle into two parts along a diameter, the circumference of each part is 41.12 cm, find the area of the circle.
将一个圆沿一条直径剪成两部分，每一个部分的周长是41.12厘米，求这个圆的面积．
<gadget id="calculator">3.14 + 2</gadget>
<output>5.14</output>

<gadget id="calculator">41.12 / 5.14</gadget>
<output>8</output>

<gadget id="calculator">8 ** 2</gadget>
<output>64</output>

<gadget id="calculator">3.14 * 64</gadget>
<output>200.96</output>

<result>200.96</result>