Download the app photomath it shows you step by step :)
The answer is going to be 5f + 2e <span> hopes this helps :)
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Check the picture below.
keeping in mind that a cube is just a rectangular prism with all equal sides.
20 and 45x
We look for a number that can go into both numbers.
5 into 20 is 4 and 5 into 45x is 9x.
5: 20 45x
4 9x
So no other number can go into 4 and 9x again.
So the GCF of 20 and 45x is 5.
Hope this explains it.
9 feet? Not sure lmk if I'm wrong other people answering