The radius of the base of a cylinder is 4 decimeters, when the height is how many decimeters, its volume is 62.8 cubic decimeters.
一个圆柱体的底面半径是4分米，当高是多少分米时，它的体积是62.8立方分米．
<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

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

<gadget id="calculator">62.8 / 50.24</gadget>
<output>1.25</output>

<result>1.25</result>