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Calculate the area of a sector of a circle with... - JSS3 Mathematics Area of Plane Figures II Question

Calculate the area of a sector of a circle with radius 12 cm and a central angle of 90∘.

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Area of Sector=90∘/360∘×𝜋×(12 cm)^2 

Area of Sector=¼×𝜋×144

Area of Sector=36𝜋

Area of Sector ≈ 113.10 square centimeters

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