There is a sand pile on the construction site that is similar to a cone. Its height is 1.5 meters and its bottom diameter is 6 meters. What is the volume of this sand pile in cubic meters?
工地上有一个近似于圆锥的沙堆，量得它的高是1.5米，底面直径是6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 * 1.5</gadget>
<output>14.13</output>

<result>14.13</result>