There are two conical containers filled with water with a ground radius of 10 cm and a height of 30 cm. Pour all the water they hold into a cuboid container with a bottom side of 20 cm. How deep is the water?
有两个盛满水的地面半径为10厘米，高为30厘米的圆锥形容器，将他们盛的水全部倒入一个底面边长为20厘米的长方体容器内，水深多少米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">20 * 20</gadget>
<output>400</output>

<gadget id="calculator">30 / 400 / 100</gadget>
<output>3/4_000 = around 0.00075</output>

<gadget id="calculator">(1/3) * 3.14 * 100 * (3/4_000)</gadget>
<output>0.0785</output>

<result>0.0785</result>