The volume of a cone is 18cm**3, the height is 2cm, what is the area of the bottom of the cone in cm**2.
一个圆锥的体积是18cm**3，高是2cm，这个圆锥的底面积是多少cm**2．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">18 / (1/3) / 2</gadget>
<output>27</output>

<result>27</result>