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Help??? And sorry for the pencil marks

Help??? And sorry for the pencil marks-example-1

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Answer:

21.98

Explanation:

first you think about the equation for perimeter. P=d(pi)

then you multiply your radius by 2 and that is 7 so you multiply 7 by pi (3.14)

that is the number of feet. so then you multiply your number of feet by your cost per foot and you get 21.98

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