If the volume of a cylinder remains the same and the area of the base expands to 5 times its original size, how much should the height be reduced to?
如果一个圆柱的体积不变，底面积扩大到原来的5倍，那么高应该缩小到原来的多少
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>