An error 4% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is	Choose the correct choice from the following choices:
A) 8.04% B) 8.14% C) 8.23% D) 8.16% E) 8.5%
100 cm is read as 102 cm.   A1 = (100 x 100) cm2 and A2 (102 x 102) cm2.   (A2 - A1) = [(104)2 - (100)2]   = (104 + 100) x (104 - 100)   = 816 cm2.   Percentage error = 8.16   8.16%
<result>D</result>
An error 4% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is