A cylinder and a cone have the same volume and base area respectively, and the height of the cone is 12 cm, what is the height of the cylinder in cm?
一个圆柱体和一个圆锥体的体积和底面积分别相等，圆锥的高是12cm，则圆柱体的高是多少cm．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">12 * (1/3)</gadget>
<output>4</output>

<result>4</result>