Answer:
I believe it's 12
Step-by-step explanation:
I am so sorry if it's incorrect-
Answer:
Step-by-step explanation:
Take the area of the yard and subtract from it the area of the pool. In quadratic form, the area of the pool is

Subtracting the area of the pool from the area of the yard:

Since the negative in front of the parenthesis will change the signs inside:

Combine like terms to get the area left after the pool goes in:

21c cuz 5.25 divided by 25 = .21
16-4=12
4+12=16
I think this right.