A cylinder and a cone have the same base area and volume respectively. The height of the cone is 9dm. What is the height of the cylinder in dm?
一个圆柱和一个圆锥的底面积和体积分别相等，圆锥的高是9dm，圆柱的高是多少dm．
<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>