A conical container has a bottom circumference of 25.12 cm and a height of 9 cm. The container is filled with water. If the water is poured into a cylindrical container with a bottom area of 12.56 cm2, what is the height of the water surface in cm?
一个圆锥形容器，底面周长是25.12厘米，高是9厘米，容器内装满了水，如果把这些水倒入底面积是12.56平方厘米的圆柱形容器中，水面的高度是多少厘米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">25.12 / 3.14 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">9 / 12.56</gadget>
<output>0.716561</output>

<gadget id="calculator">(1/3) * 3.14 * 16 * 0.716561</gadget>
<output>12.000008</output>

<result>12.000008</result>