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:  Options:
A) 4.00%  B) 4.14%  C) 4.04%  D) 4.26%  E) 4.27%
100 cm is read as 102 cm.   A1 = (100 x 100) cm2 and A2 (102 x 102) cm2.   (A2 - A1) = [(102)2 - (100)2]   = (102 + 100) x (102 - 100)   = 404 cm2.   Percentage error = 404	x 100	%	= 4.04%   100 x 100   4.04%
<result>C</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: