A cylinder and a cone with equal base and equal volume. The height of the cylinder is 6 decimeters. What is the height of the cone?
等底等体积的圆柱和圆锥，圆柱的高是6分米，圆锥的高是多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 / (1/3)</gadget>
<output>18</output>

<result>18</result>