When a cylinder and a cone have the same base and volume, and the height of the cone is 1.2 decimeters, what is the height of the cylinder in decimeters?
圆柱、圆锥等底、等体积时，圆锥高1.2分米，则圆柱的高是多少分米．
<gadget id="calculator">1.2 / 3</gadget>
<output>0.4</output>

<result>0.4</result>