A cone and a cylinder have the same base and height, the volume of the cone is 5m**3, what is the volume of the cylinder in m**3.
圆锥和圆柱等底等高，圆锥的体积是5m**3，圆柱的体积是多少m**3．
<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<result>15</result>