A cone and a cuboid have the same base and height, their volumes differ by 20cm**3, what is the volume of the cone in cm**3.
一个圆锥和一个长方体等底等高，它们体积相差20cm**3，这个圆锥的体积是多少cm**3．
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<result>10</result>