cone whose base radius is 2 decimeters and whose height is 3 times its diameter, what is the volume of the cone in cubic decimeters?
一个圆锥体，底面半径是2分米，高是直径的3倍，这个圆锥体的体积是多少立方分米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">2 * 2 * 3</gadget>
<output>12</output>

<gadget id="calculator">(1/3) * 3.14 * 4 * 12</gadget>
<output>50.24</output>

<result>50.24</result>