Given:
Two cylinders are similar. The volume of one is 64 cm³ and the volume of the other is 729 cm³.
We need to determine the scale factor between them.
Scale factor:
Since, it is given that the volume of two cylinders, we need to take cube root.
Thus, we have;

Taking cube root, we get;
![Scale \ factor=\sqrt[3]{64} :\sqrt[3]{729}](https://img.qammunity.org/2021/formulas/mathematics/high-school/t6ongfovs47d59vh3iiou4vtm2q5e4kwrt.png)
Simplifying, we have;

Thus, the scale factor between the two cylinders is 4 : 9