cylinder and a cone have the same base and height, the sum of their volumes is 64dm**3, what is the volume of the cone dm**3.
一个圆柱和一个圆锥等底等高，它们的体积和是64dm**3，圆锥的体积是多少dm**3．
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">64 * (1/4)</gadget>
<output>16</output>

<result>16</result>