A cylinder with a volume of 90 cubic centimeters is cut into the largest cone, what is the volume of this cone in cubic centimeters?
一个体积为90立方厘米的圆柱，削成一个最大的圆锥，这个圆锥的体积是多少立方厘米．
<gadget id="calculator">90 / 3</gadget>
<output>30</output>

<result>30</result>