When a cylinder and a cone have the same height and volume, the base area of the cylinder is 9.42 square centimeters; what is the base area of the cone?
一个圆柱和一个圆锥高和体积相等时，圆柱的底面积是9.42平方厘米；圆锥的底面积是多少．
<gadget id="calculator">9.42 * 3</gadget>
<output>28.26</output>

<result>28.26</result>