Submerge a conical part in a cylindrical container with a bottom diameter of 40 cm. Now take out the conical part and find that the water level has dropped by 5 cm. What is the volume of this cone in cubic centimeters?
把一个圆锥零件浸没在底面直径是40厘米的圆柱形容器里，现在把这个圆锥零件取出来，发现水面下降了5厘米．这个圆锥零件的体积是多少立方厘米？
<gadget id="calculator">40 / 2</gadget>
<output>20</output>

<gadget id="calculator">20 ** 2</gadget>
<output>400</output>

<gadget id="calculator">3.14 * 400 * 5</gadget>
<output>6_280</output>

<result>6_280</result>