A cone and a cylinder have equal volume and base area. If the height of the cone is 9 cm, what is the height of the cylinder in cm?
体积、底面积分别相等的圆锥体和圆柱体，如果圆锥体的高是9厘米，圆柱体的高是多少厘米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">9 * (1/3)</gadget>
<output>3</output>

<result>3</result>