There is a pile of sand that is similar to a cone, the circumference of the bottom is 12.56 meters, and the height is 1.5 meters. What is its volume in cubic meters.
有一个近似圆锥体的沙堆，底面周长是12.56米，高1.5米．它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">12.56 / 3.14 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">(1/3) * 3.14 * 4 * 1.5</gadget>
<output>6.28</output>

<result>6.28</result>