The circumference of a circular lawn is 50.24 meters, how many square meters does this lawn occupy?
一块圆形草坪周长是50.24米，这块草坪占地多少平方米？
<gadget id="calculator">2 * 3.14</gadget>
<output>6.28</output>

<gadget id="calculator">50.24 / 6.28</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>