Find the area of the sector whose radius 7 cm and central angle is 180⁰
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Area of a sector of a circle of radius 'r' and angle
θ= θ/360πr^2
Hence, area of the sector of the circle of radius 7 cm and angle 180 = 180/360 x 22/7 x 7 x 7
= 77 cm^2
Area of a sector of a circle of radius 'r' and angle
θ= θ/360πr^2
Hence, area of the sector of the circle of radius 7 cm and angle 180 = 180/360 x 22/7 x 7 x 7
= 77 cm^2
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