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:
Pick one
A) 2%  B) 2.02%  C) 4%  D) 4.04%  E) 5%
Correct value is 100x100.   Measured value is 102x102.   Therefore ERROR Value is (102x102)-(100x100) = 404.   Error% = (error value/ true value)*100.   = (404/100x100)x100 = 4.04.   answer :4.04%
<result>D</result>
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: