There is a circular pool with a circumference of 565.2 decimeters. How much land does this pool occupy?
有一个圆形水池，周长是565.2分米，这个水池占地多少？
<gadget id="calculator">565.2 / 3.14 / 2</gadget>
<output>90</output>

<gadget id="calculator">90 ** 2</gadget>
<output>8_100</output>

<gadget id="calculator">3.14 * 8_100</gadget>
<output>25_434</output>

<result>25_434</result>