A cylindrical container is used to hold water, the height of which is 5 cm, and the water is poured into a conical container with the same height as the bottom, what is the height of the water in cm?
用一个圆柱形容器盛水，水高5厘米，将水倒入和它等底等高的圆锥形容器中，水的高度是多少厘米．
<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<result>15</result>