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

    Question

    A circle has its area eleven times greater than its

    circumference in numeric value. Find the circle’s diameter.
    A 50 units Correct Answer Incorrect Answer
    B 32 units Correct Answer Incorrect Answer
    C 44 units Correct Answer Incorrect Answer
    D 22 units Correct Answer Incorrect Answer

    Solution

    ATQ,

    Circumference = 2 × π × r

    Area = π × r²

    Let radius = r units

    π × r² = 11 × 2 × π × r

    ⇒ r² = 22r

    ⇒ r = 22

    Diameter = 2 × 22 = 44 units

    Practice Next

    Relevant for Exams: