The volume ratio of a cylinder and a cone with equal base areas is 5:2. Given that the height of the cone is 12 cm, find the height of the cylinder.
底面积相等的圆柱与圆锥的体积比是5：2．已知圆锥的高是12cm，求圆柱的高．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">(1/3) * 12 * (5/2)</gadget>
<output>10</output>

<result>10</result>