A cylinder and a cone have the same base area and height. Given that the volume of the cone is 7.8 cubic meters, what is the volume of the cylinder?
一个圆柱体和一个圆锥体的底面积和高都相等．已知圆锥体的体积是7.8立方米，那么圆柱体的体积是多少．
<gadget id="calculator">7.8 * 3</gadget>
<output>23.4</output>

<result>23.4</result>