The ratio of the base radii of the two cones is 2:3, and the corresponding height ratio is 3:5. One of the cones has a volume of 12, and the other cone has a volume of 12.
两个圆锥的底面半径的比为2：3，对应的高的比为3：5，其中的一个圆锥的体积为12，另一个圆锥的体积为多少．
<gadget id="calculator">15 / 4</gadget>
<output>15/4 = around 3.75</output>

<gadget id="calculator">12 * (15/4)</gadget>
<output>45</output>

<result>45</result>