There is a round dining table in the living room of Zhao Shan’s house. The measured circumference is 12.56 meters. What is its area in square meters?
赵姗家客厅有个圆餐桌，量得周长为12.56米，它的面积为多少平方米．
<gadget id="calculator">12.56 / 3.14 / 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>