The sum of the volumes of a cone and a cylinder with the same base and height is 48 cubic centimeters. What is the volume of the cone?
一个圆锥与一个等底等高的圆柱的体积的和是48立方厘米，圆锥体的体积是多少．
<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<result>12</result>