The height of a cone is 12cm, and its volume is 40cm**3, which is 10cm**3 larger than that of a cylinder with the same base. What is the height of this cylinder?
一个圆锥的高是12cm，体积是40cm**3，比与它等底的圆柱体积大10cm**3，这个圆柱的高是多少．
<gadget id="calculator">3 / 12</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">40 * (1/4)</gadget>
<output>10</output>

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

<gadget id="calculator">30 / 10</gadget>
<output>3</output>

<result>3</result>