If the volume of a cone is 5dm**3, what is the volume of a cylinder with the same base and height as dm**3?
一个圆锥的体积5dm**3，与它等底等高的圆柱的体积是多少dm**3．
<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<result>15</result>