A cylinder and a cone have the same base area and volume. It is known that the height of the cylinder is 4 decimeters, what is the height of the cone?
一个圆柱与一个圆锥的底面积和体积分别相等．已知圆柱的高是4分米，圆锥的高是多少？
<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<result>12</result>