A cylinder and a cone have the same base and volume, and the height of the cone is 12 cm. What is the height of the cylinder?
一个圆柱体和一个圆锥体等底等体积，圆锥体的高是12厘米，圆柱体的高是多少．
<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>