A cylinder is 4 decimeters high and its volume is 40 cubic decimeters, which is 10 cubic decimeters larger than the volume of a cone with the same base. What is the height of this cone in centimeters?
一个圆柱高4分米，体积是40立方分米，比与它等底的圆锥的体积多10立方分米，这个圆锥的高是多少厘米．
<gadget id="calculator">40 / 4</gadget>
<output>10</output>

<gadget id="calculator">40 - 10</gadget>
<output>30</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">30 * (3/10) * 10</gadget>
<output>90</output>

<result>90</result>