If the volume of a cube is 7cm**3, and there is a cone whose base radius is equal to the side length of the cube, and the height of the cone is twice the radius, what is the volume of the cone in cm**3? (π takes 3)
若一个正方体的体积为7cm**3，有一圆锥的底面半径等于这个正方体的棱长，而圆锥高是半径的2倍，那么这个圆锥的体积是多少cm**3？(π取3)
<gadget id="calculator">2 * 7</gadget>
<output>14</output>

<result>14</result>