Answer:
5
Step-by-step explanation:
An area is just a number squared, so we need to find the square root of the area.
Square root of 25 = 5
So each edge is 5 feet.
Hope this helps :)
Answer:

Step-by-step explanation:
Step 1: Simplify square roots
√72 = 6√2
√50 = 5√2
So, 
Step 2: Cancel like terms

Step 3: Rewrite
And we should get our answer!