Fill a cylindrical container with a bottom radius of 2 cm and a height of 10 cm with water, and then pour the water in it into a cylindrical container with a bottom radius of 1 cm, then what is the height of the water in this container ．
把一个底面半径为2厘米，高为10厘米的圆柱形容器装满水，再把它里面的水倒入一个底面半径为1厘米的圆柱形容器中，那么，这个容器内的水高为多少．
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 10</gadget>
<output>125.6</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">125.6 / 3.14 / 1</gadget>
<output>40</output>

<result>40</result>