How many iron pieces of a cone with the same bottom and height as the cylinder can be cast after melting four iron ingots of the same shape.
把4个形状完全相同的圆柱体铁块熔化后，可浇铸成与这种圆柱体等底等高的圆锥体铁件多少块．
<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<result>12</result>