On a drawing with a scale of 1:200, the diameter of a circular flower bed is measured to be 2 cm. How many square meters does this flower bed actually occupy?
在一幅比例尺是1：200的图纸上，量得一个圆形花坛的直径是2厘米，这个花坛实际占地面积是多少平方米？
<gadget id="calculator">1 / 200</gadget>
<output>1/200 = around 0.005</output>

<gadget id="calculator">2 / (1/200) / 100 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<result>12.56</result>