A piece of cylindrical wood with a volume of 42.9dm**3 is cut into a largest cone, what is the volume of the cut part dm**3.
一段体积是42.9dm**3的圆柱木料，切削成一个最大的圆锥，削去部分的体积是多少dm**3．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">42.9 * (2/3)</gadget>
<output>28.6</output>

<result>28.6</result>