The volume of a cone is 20dm**3, the height is 12dm, what is the area of the base dm**2.
一个圆锥的体积是20dm**3，高是12dm，底面积是多少dm**2．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">20 / (1/3) / 12</gadget>
<output>5</output>

<result>5</result>