A cylinder and a cone have the same base area and volume respectively, and the height of the cylinder is 4 cm, what is the height of the cone in cm?
一个圆柱体和一个圆锥体的底面积和体积分别相等，已知圆柱体的高4厘米，那么圆锥体的高是多少厘米．
<gadget id="calculator">3 / 1</gadget>
<output>3</output>

<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<result>12</result>