The volume of a cylinder is 50.24cm**3, the diameter of the bottom is 4cm, what is the height?
一个圆柱体积是50.24cm**3，底面直径是4cm，高是多少．
<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">50.24 / 12.56</gadget>
<output>4</output>

<result>4</result>