Multiple Choice Questions on The diagonal of a rectangle is radic 125 cm and its area is 50 sq cm The perimeter of the rectangle ........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The diagonal of a rectangle is radic 125 cm and its area is 50 sq cm The perimeter of the rectangle ...........

Quantitative Aptitude ( CCS) Mensuration 2D
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    The diagonal of a rectangle is √125 cm and its area is 50 sq. cm. The perimeter of the rectangle must be:

    45cm
    Incorrect Answer
    30cm
    Correct Answer
    42cm
    Incorrect Answer

    36cm

    Incorrect Answer
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    Explanation:

    √(l2 + b2)=√125
    lb=50
    (l+b)2=l2=+b2=+2lb
    =125+(2*50)
    =225.
    L+b=15
    Perimeter=2*15=30cm.

    By: Amit Kumar
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