a chord of circle of radius 7 cm subtends a right angle at the centre find the area of minor sector of the circle
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ar sector= πr^2 x ∅/360
= 22/7 x7^2 x 90/360
= 154 x 0.25
= 38.5cm^2
= 22/7 x7^2 x 90/360
= 154 x 0.25
= 38.5cm^2
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