Answer:
5:6
Explanation:
To find the ratio of side lengths you need to cube root of the ratio of the volumes. The reason you use the cube root is because you are multiplying 3 things together when you find volume.
5 : 6
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![\sqrt[3]{(125)/(216) } =(5)/(6)](https://img.qammunity.org/qa-images/2023/formulas/mathematics/high-school/kadrsv0p8bck40esh123.png)