Arithmetic Ability
Area

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Q.

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

View Answer

Correct choice: A

Explanation:

100 cm is read as 102 cm a = 100 x 100 sq.cm and b = 102 x 102 sq.cm then, Increase in area = [ (102 x 102) - (100 x 100) ] sq.cm percentage error =404100*100*100 = 4.04%
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