A cylinder and a cone have the same volume and base area, the height of the cone is 15cm, what is the height of the cylinder in cm?
一个圆柱与一个圆锥体积和底面积都相等，圆锥高15cm，圆柱高多少cm．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">15 * (1/3)</gadget>
<output>5</output>

<result>5</result>