Dig a circular pool with a circumference of 56.52 meters. How many square meters does this pool occupy?
挖一个周长是56.52米的圆形水池，这个水池的占地面积是多少平方米？
<gadget id="calculator">56.52 / 3.14 / 2</gadget>
<output>9</output>

<gadget id="calculator">9 ** 2</gadget>
<output>81</output>

<gadget id="calculator">3.14 * 81</gadget>
<output>254.34</output>

<result>254.34</result>