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 the correct choice.
A) 6.04 %	B) 5.14 %	C) 5.23 %	D) 5.0625 %	E) 5.5 %

Rationale: "100 cm is read as 102 cm . a 1 = ( 100 x 100 ) cm 2 and a 2 ( 102.5 x 102.5 ) cm 2 . ( a 2 - a 1 ) = [ ( 102.5 ) 2 - ( 100 ) 2 ] = ( 102.5 + 100 ) x ( 102.5 - 100 ) = 506.25 cm 2 . percentage error = 5.0625 d"
Answer: D