The radius ratio of the big and small circles is 3:2, and the difference in circumference is 12.56. What is the difference in area between the two circles?
大、小两圆的半径比是3：2，周长差是12.56，则两圆的面积差是多少
<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">12.56 / 1 / 3.14 / 2</gadget>
<output>2</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36</gadget>
<output>113.04</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<gadget id="calculator">113.04 - 50.24</gadget>
<output>62.8</output>

<result>62.8</result>