A cylinder and a cone with the same base and height, the volume of the cone is 9m3, what is the volume of the cylinder?
等底等高的圆柱和圆锥体，圆锥的体积是9m3，那么圆柱的体积是多少．
<gadget id="calculator">9 * 3</gadget>
<output>27</output>

<result>27</result>