Answer A: 76.97 sq. ft.
Answer B: 22 ft.
To find the area you would do (pi)r^2/2
substituting in the radius of 7 would give us our answer of 76.97 ft sq.
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To find the feet needed to cover the entire border, you would do 2(pi)r/2
substituting in the radius of 7 would give us our answer of 22.
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Hope this helps you out! :D
