Two cones have the same volume, and their radii and heights are r1, h1, and r2, h2, respectively. If r1 is 3 times r2, then how much h1 is h2
两个圆锥的体积相等，它们的半径和高分别是r1、h1、和r2、h2．如果r1是r2的3倍，那么h1是h2的多少
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<result>1/9 = around 0.111111</result>