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in Areas Related To Circles by (44.5k points)
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A chord of a circle of radius 10cm subtends a right angle at the centre. Use π = 3.14 and find:

(i) area of the minor sector 

(ii) area of the major sector

1 Answer

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Best answer

Given: Radius of the circle = OA = OB = 10 cm

and θ = 90°

(i) Area of the minor sector

(ii) Area of major sector

Area of major sector = Area of circle - Area of minor sector = πr2 – 78.5

= 3.14 × (10)2 – 78.5

= 314 – 78.5

= 235.5 cm2

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