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12-03-2022
Mathematics

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a circle has an area of approximately 201.06 cm^2. If the radius doubled, what is the approximate area of the new circle?

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TiltOfficial TiltOfficial

12-03-2022

804.24 - we know this because the area of a circle is r^2*pi. If we double the radius we get (2r)^2*pi or 4r^2*pi. We notice that this is just 4 times the area of the original circle, equating to 804.24.

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