Subject

    Bank Exam

    Topic

    Bangladesh Krishi Bank 2012 (Sr. Officer))

    If A is the area and C the circumference of a circle, which of the following is an expression for A in terms of C?

    ক)
    c2/4π
    খ)
    c2/4π2
    গ)
    2c
    ঘ)
    2c2 √π

    Explanation

    a=4πr2 c=2 πr r=c/2 π now,a=4πr2 =π x ( c/2 π)2 = c2/4π

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