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Mathematics 10 Online
OpenStudy (anonymous):

What is the radius of a circle when ∠COD = 40° and the area of sector COD = 9π?

OpenStudy (anonymous):

OpenStudy (raden):

40/360 = 9Ï€/area of circle 40/360 = 9Ï€/Ï€r^2 1/9 = 9/r^2 solve for r

OpenStudy (anonymous):

@RadEn can you help me, i really don't get this..

OpenStudy (raden):

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