Multiple Choice Questions on The area of a rectangle is four times of a square The length of the rectangle is 80 cm and the bread........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The area of a rectangle is four times of a square The length of the rectangle is 80 cm and the bread...........

Quantitative Aptitude ( CCS) Mensuration 2D
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    The area of a rectangle is four times of a square. The length of the rectangle is 80 cm and the breadth of the rectangle is 3 times that of the side of the square. What is the side of the square?

    20 cm

    Incorrect Answer

    40 cm

    Incorrect Answer

    60 cm

    Correct Answer

    80 cm

    Incorrect Answer
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    Explanation:

    L = 80 cm. B = 3a,
    where a is the side of the square. 
    ∴ Area of rectangle = LB = 4a2 
    ⇒ 80 x 3a = 4 a2 
    ⇒ a = 60 cm.

    By: MIRZA SADDAM HUSSAIN
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