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AVprozaik [17]
2 years ago
14

a square swimming pool has a cement sidewalk around it. The sidewalk is the same width all the way around. The outside perimeter

of the sidewalk is 80 feet. What is the width of the sidewalk if the area of the pool is 225 square feet?​
Mathematics
1 answer:
VLD [36.1K]2 years ago
6 0

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.

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16 =  \{(n - 1) - 1 \}d \\ 16 = (n - 2)d \\ d =  \frac{16}{n - 2}

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