A conical container with a height of 15 cm is filled with water. If water is poured into a cylindrical container with the same area as its bottom, what is the height of the water surface in cm?
一个高15厘米的圆锥形容器盛满水，把水倒入和它底面积相等的圆柱形容器内，水面高度是多少厘米．
<gadget id="calculator">15 / 3</gadget>
<output>5</output>

<result>5</result>