A gold-plated steel wire is 30 meters long, and 174 centimeters remain after winding 100 times on a cylindrical steel pipe. What is the cross-sectional area of this steel pipe in square centimeters?
一根镀金钢丝长30米，在一根圆柱形钢管上绕100圈后还剩174厘米，这根钢管的横截面面积是多少平方厘米？
<gadget id="calculator">30 * 100</gadget>
<output>3_000</output>

<gadget id="calculator">3_000 - 174</gadget>
<output>2_826</output>

<gadget id="calculator">2 * 3.14</gadget>
<output>6.28</output>

<gadget id="calculator">2_826 / 100 / 6.28</gadget>
<output>4.5</output>

<gadget id="calculator">4.5 ** 2</gadget>
<output>20.25</output>

<gadget id="calculator">3.14 * 20.25</gadget>
<output>63.585</output>

<result>63.585</result>