A cone-shaped sand pile has a base diameter of 6 meters and a height of 2 meters. What is the volume of the sand pile in cubic meters?
一个圆锥形沙堆，底面直径是6米，高2米，这个沙堆的体积是多少立方米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">(1/3) * 3.14 * 9 * 2</gadget>
<output>18.84</output>

<result>18.84</result>