It is known that the base area, radius and height of a cone are both equal to the side length of a cube. The volume of this cube is 216 cubic decimeters. Find the volume of this cone.
已知一个圆锥体的底面积半径和高都等于正方体的棱长，这个正方体的体积是216立方分米，求这个圆锥体的体积．
<gadget id="calculator">216 / 3</gadget>
<output>72</output>

<gadget id="calculator">3.14 * 72</gadget>
<output>226.08</output>

<result>226.08</result>