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What is the area of a sector
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What is the area of a sector

User Sschale
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The area of a sector of a circle is ½ r² ∅, where r is the radius and ∅ the angle in radians subtended by the arc at the centre of the circle. So in the below diagram, the shaded area is equal to ½ r² ∅ .
User Gutanoth
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