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What is the measure of the central angle of the sector whose area is 462 sq. cm and radius of the circle is 21 cm?
- A90°
- B60°
- C30°
- D120°
Answer not set
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CCommunity
Area of sector = (θ/360°) × π r2, where r is the radius of circle
462 = (θ/360°) × (22/7) × (21)2
θ = 120°
462 = (θ/360°) × (22/7) × (21)2
θ = 120°