The difference between the volumes of a cylinder and a cone with the same base and height is 4.6 cubic decimeters. What is the volume of the cylinder in cubic decimeters?
等底等高的圆柱体和圆锥体积之差是4.6立方分米，圆柱的体积是多少立方分米．
<gadget id="calculator">4.6 / 2</gadget>
<output>2.3</output>

<gadget id="calculator">2.3 * 3</gadget>
<output>6.9</output>

<result>6.9</result>