cylindrical fountain with a volume of 37.68m**3 and an inner diameter of 4m. How deep is the pool in m?
一个圆柱形喷水池，容积37.68m**3，池内直径4m，这个水池深多少m．
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">37.68 / 12.56</gadget>
<output>3</output>

<result>3</result>