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Circumference is 2(pi)r are is (pi)r2.

First we need to find r

r= 7.85/(2pi)=1.2493663032713783857857375424742.

To find the area, square that and multiply by pi.

Area = 4.9037627403401601642090198542114.

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Q: What is the area to a circle when the circumference is 7.85?
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