A cylinder and a cone have the same volume, the ratio of their heights is 2:3, the area of the base of the cylinder is 7cm**2, what is the area of the base of the cone.
一个圆柱和一个圆锥的体积相等，它们高的比是2：3，圆柱的底面积是7cm**2，圆锥的底面积是多少．
<gadget id="calculator">7 * 2</gadget>
<output>14</output>

<result>14</result>