If 502.4 liters of water are to be poured into a cylindrical water tank with a bottom radius of 4 decimeters, what is the depth of the water in the tank at this time?
要把502.4升水倒入一个底面半径是4分米的圆柱体水箱内，这时箱内水深多少分米．
<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<gadget id="calculator">502.4 / 50.24</gadget>
<output>10</output>

<result>10</result>