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

A 2.00%
B 4.04%
C 2.02%
D 4.00%

Correct Answer: 4.04%

Let, Original length of side = 100 ∴ Area = ( 100×100) = 1000When, 2% in excess .'. Area  = (102×102) = 10404.'. Excess  = 10404 - 10000  = 404Required percentage  =  (404×10010000) = 4.04%
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