Subject

    Quantitative Aptitude

    Topic

    Areas & Volumes

    If the length of the diagonal of a square is 20cm,then its perimeter must be

    ক)
    \(40\sqrt2\) cm
    খ)
    \(30\sqrt2\) cm
    গ)
    10cm
    ঘ)
    15\(\sqrt2\) cm

    Explanation

    We know that d=√2s Given diagonal = 20 cm => s = 20/2\sqrt2cm Therefore, perimeter of the square is 4s = 4 x 20/2\sqrt2 = 402\sqrt2 cm

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