Asquare 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?

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.

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

b

2

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b

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7

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14

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7

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14

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6

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step-by-step explanation: