The volume of a cone is 2 cubic meters, the height is 4 decimeters, what is the area of the base?
一个圆锥体体积是2立方米，高是4分米，底面积是多少．
<gadget id="calculator">2_000 * 3</gadget>
<output>6_000</output>

<gadget id="calculator">6_000 / 4</gadget>
<output>1_500</output>

<result>1_500</result>