A circle is formed by a rope with a length of 50.24 meters. What is the area of the circle?
用一根长为50.24米的绳子围成一个圆，这个圆的面积是多少．
<gadget id="calculator">50.24 / 3.14 / 2</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>