cylinder is 10 decimeters high and its volume is 12.56 cubic decimeters, which is 3.14 cubic decimeters larger than that of a cone with the same base. What is the height of this cone?
一个圆柱高10分米，体积是12.56立方分米，比与它等底的圆锥的体积多3.14立方分米，这个圆锥的高是多少？
<gadget id="calculator">12.56 - 3.14</gadget>
<output>9.42</output>

<gadget id="calculator">12.56 / 10</gadget>
<output>1.256</output>

<gadget id="calculator">3 / 1.256</gadget>
<output>2.388535</output>

<gadget id="calculator">9.42 * 2.388535</gadget>
<output>22.5</output>

<result>22.5</result>