Multiple Choice Questions on An error 2 in excess is made while measuring the side of a square The percentage of error in the cal........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

An error 2 in excess is made while measuring the side of a square The percentage of error in the cal...........

Quantitative Aptitude ( CCS) Mensuration 2D
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    An error 2% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is:

    204

    Incorrect Answer

    404

    Correct Answer

    304

    Incorrect Answer

    104

    Incorrect Answer
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    Explanation:

    100 cm is read as 102 cm. 
    A1 = (100*100)Sq.cm 
    A2 = (102*102)Sq.cm
    (A2 - A1) = 102^2−100^2 = (102 + 100) x (102 - 100) = 404 sq.cm.

    By: MIRZA SADDAM HUSSAIN
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