Answer:
See below
Step-by-step explanation:

Answer:
175 square feet
Step-by-step explanation:
the area of the whole thing is 400 ft. (20 x 20=400)
i got the 20 from the perimeter b/c 20+20+20+20=80
then subtract the area of the pool from 400 to get 175.
Answer is C. The half of the number is 175
$11 per hour. Divide 82.5 by 7.5 and you get how much money she earns in an hour (11 dollars)