If the volume of a cone is 15 cubic decimeters, what is the volume of a cylinder with the same base and height as it?
一个圆锥的体积是15立方分米，与它等底等高的圆柱体的体积是多少立方分米．
<gadget id="calculator">15 * 3</gadget>
<output>45</output>

<result>45</result>