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      Question

      The radius of a circle is 7 cm. Find the area of the

      sector formed by a central angle of 90°.
      A 38.5 cm² Correct Answer Incorrect Answer
      B 65.5 cm² Correct Answer Incorrect Answer
      C 21.5 cm² Correct Answer Incorrect Answer
      D None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      Area of sector = (θ/360) × πr² = (90/360) × (22/7) × 7² = ¼ × (22/7 × 49) = 38.5 cm²

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