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Verified Answer :

iGreen

C = 2 pi r

Plug in what we know:

2pi = 2 pi r

Divide 2 pi to both sides:

r = 1

(Remember, anything divided by itself is equal to 1)

A = pi r^2

Plug in what we know:

A = pi 1^2

A = pi * 1

A = 1 pi

So the area is '1 pi' or just 'pi'.

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