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

    Question

    The area of a square is 45 sq. cm more than the area of

    a rectangle of length 15 cm and breadth 12 cm. What will be the area of incircle of the square?
    A 8.5 cm Correct Answer Incorrect Answer
    B 6.5 cm Correct Answer Incorrect Answer
    C 7.5 cm Correct Answer Incorrect Answer
    D 8 cm Correct Answer Incorrect Answer

    Solution

    The area of rectangle = l × b = 15 × 12 = 180 sq. cm The area of square = 180 + 45 = 225 sq. cm The side of square = √225 = 15 cm Radius of incircle of a square = side = 15/2 = 7.5 cm

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