A circular flowerbed has a diameter of 12 meters, and (1/4) of it is used for planting chrysanthemums. How many square meters is the area for planting chrysanthemums?
一个圆形花圃，它的直径为12米，用它的(1/4)地方种菊花，种菊花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">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3.14 * 36 * (1/4)</gadget>
<output>28.26</output>

<result>28.26</result>