Question
If an arc subtends an angle of 90o at the
centre of the circle whose radius is 28 cm, then find the area of that sector. [Take π = 22/7]Solution
Area of the sector = (θ/360) × π × r2 [Where ‘θ’ is the angle subtended by the minor arc and ‘r’ is the radius of the circle] Desired area = (90/360) × (22/7) × 28 × 28 = 616 cm2
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