A rope with a length of 314 cm is wound exactly 10 times on the outer wall of a pipe. If the wall thickness of the pipe is 1 cm, what is the cross-sectional area of the pipe in square centimeters?
一根长为314厘米的绳子在一根管子的外壁上恰好绕了10圈，如果这根管子的管壁厚为1厘米，那么这根管子的横截面面积是多少平方厘米？
<gadget id="calculator">3.14 * 2</gadget>
<output>6.28</output>

<gadget id="calculator">314 / 10 / 6.28</gadget>
<output>5</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

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

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

<result>50.24</result>