Given that the circumference of a circle is 25.12 meters, what is the area of the circle in square meters?
已知圆的周长是25.12米，那么这个圆的面积是多少平方米．
<gadget id="calculator">25.12 / 3.14</gadget>
<output>8</output>

<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>