The sum of the volumes of a cone and a cylinder with the same base and height is 48cm**3, what is the volume of the cone in cm**3.
一个圆锥体与一个等底等高的圆柱体的体积之和是48cm**3，圆锥体的体积是多少cm**3．
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<result>12</result>