An error 2.5% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is	Choose one:
A) 6.04% B) 5.14% C) 5.23% D) 5.0625% E) 5.5%
100 cm is read as 102 cm.   A1 = (100 x 100) cm2 and A2 (102.5 x 102.5) cm2.   (A2 - A1) = [(102.5)2 - (100)2]   = (102.5 + 100) x (102.5 - 100)   = 506.25 cm2.   Percentage error = 5.0625   5.0625%
<result>D</result>
An error 2.5% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is