A cylinder and a cone with the same base and height, if the volume of the cylinder is 12 cubic meters, what is the volume of the cone?
等底等高的圆柱和圆锥，已知圆柱的体积是12立方米，圆锥的体积是多少立方米．
<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>