A cylinder and a cone have the same base area and volume respectively. If the height of the cylinder is 12 cm, what is the height of the cone in cm?
一个圆柱和一个圆锥，它们的底面积和体积分别相等，如果圆柱的高是12厘米，圆锥的高是多少厘米．
<gadget id="calculator">12 * 3</gadget>
<output>36</output>

<result>36</result>