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an angle of radius 20cm subtends an angle of 90 degree at the center . find the area of the corresponding major segment of the circle |
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Answer» Answer: Step-by-step explanation: r=20cm ∠POQ=90° ∴ the triangle is an right angled ISOSCELES Δ first, area of minor segment = area of minor sectorPOQ - area of ΔPOQ = ∅/360 *πr² - 1/*b*h = 90/360 *22/7*20*20 = 1100/7 cm² area of MAJOR segment = area of circle - area or minor segment = πr² - 1100/7 cm² = 22/7*20*20 - 1100/7 = 8800/7 - 1100/7 = 7700/7 = 1100cm² hope this is correct , GOOD day:) |
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