To cut a cylinder with a volume of 216cm**3 into the largest cone, how many cm**3 should be cut.
把体积是216cm**3的圆柱削成一个最大的圆锥，需要削去多少cm**3．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">216 * (1/3)</gadget>
<output>72</output>

<gadget id="calculator">216 - 72</gadget>
<output>144</output>

<result>144</result>