Two iron wires with a length of 12.56 cm are used to form a square and a circle respectively, which area is larger? How big is it?
用两根长12.56厘米的铁丝分别围成一个正方形和一个圆，哪个面积大？大多少？
<gadget id="calculator">12.56 / 4</gadget>
<output>3.14</output>

<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>

<gadget id="calculator">3.14 * 3.14</gadget>
<output>9.8596</output>

<gadget id="calculator">12.56 - 9.8596</gadget>
<output>2.7004</output>

<result>2.7004</result>