Cut a cylinder with a volume of 30cm**3 into the largest cone, what is the volume of the cone in cm**3?
把体积是30cm**3的圆柱，削成一个最大的圆锥，圆锥的体积是多少cm**3．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">30 * (1/3)</gadget>
<output>10</output>

<result>10</result>