A rectangular prism has a volume of 729 ft3. the length, width, and height are all the same. what is the length of each sode of the prism?

So in this case we just want to find the cubic root of this.

Cubic roots:

1: 1

2: 8

3: 27

4: 64

5: 125

6: 216

7: 343

8: 512

9: 729

So each side of the rectangular prism is 9 feet long.