Answer:
one time
Step-by-step explanation:
because after that you would subtract by 20
Answer:

or

Step-by-step explanation:
we know that
Applying the Pythagorean Theorem in the rectangular pool

where
d is the diagonal of the pool
L is the length of the pool
W is the wide of the pool
we have

substitute the given values

solve for L

simplify

or
