A cylinder and a cone have the same base area and volume, the height of the cylinder is 1.2 cm, and the height of the cone is cm.
一个圆柱体和一个圆锥体，底面积相等，体积也相等，圆柱的高是1.2cm，圆锥的高多少cm．
<gadget id="calculator">1.2 * 3</gadget>
<output>3.6</output>

<result>3.6</result>