s=12 square decimeters, h=30 decimeters, find the volume of this cone.
s=12平方分米，h=30分米，求这个圆锥的体积．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) * 12 * 30</gadget>
<output>120</output>

<result>120</result>