New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    Find the area of sector of a circle whose radius is 21

    cm and angle subtended by the sector at centre of circle is 45 ° .
    A 188.25 sq cm Correct Answer Incorrect Answer
    B 164.25 sq cm Correct Answer Incorrect Answer
    C 156.25 sq cm Correct Answer Incorrect Answer
    D 173.25 sq cm Correct Answer Incorrect Answer

    Solution

    Area of sector = (A/360) X π X radius 2  (Here 'A' is the angle subtended by sector at centre)

    So, required area = (45/360) x (22/7) X 21 2  = 173.25 cm 2

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