Uncle Zhang measured the trunk with a 26-meter-long rope. After he wrapped the trunk with a rope for four weeks, there was still 8.8 decimeters more. What is the area of the cross-section of the trunk where it is wound?
张叔叔用一根长26米的长绳子测量树干．他用绳子将树干绕了四周后还多8.8分米，树干被绕位置横截面的面积是多少平方分米？
<gadget id="calculator">26 * 10</gadget>
<output>260</output>

<gadget id="calculator">260 - 8.8</gadget>
<output>251.2</output>

<gadget id="calculator">251.2 / 4 / 3.14 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100</gadget>
<output>314</output>

<result>314</result>