The school has a circular flower bed with a diameter of 12 meters. What is the area of the flower bed in square meters?
学校有一个圆形花坛，直径是12米，这个花坛的面积是多少平方米？
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36</gadget>
<output>113.04</output>

<result>113.04</result>