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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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