cylinder and a cone have the same base area and height. It is known that the volume of the cone is 2.6 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2.6立方米，那么圆柱体的体积是多少．
<gadget id="calculator">2.6 * 3</gadget>
<output>7.8</output>

<result>7.8</result>