conical part has a base diameter of 20 cm and a height of 30 cm. What is the volume of this part in cubic centimeters?
一个圆锥形零件，它的底面直径是20厘米，高是30厘米，这个零件的体积是多少立方厘米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

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

<gadget id="calculator">(1/3) * 3.14 * 100 * 30</gadget>
<output>3_140</output>

<result>3_140</result>