An error 10% in excess is made while measuring the side of a square. Now What is the percentage of error in the calculated area of the square?  Pick.
A) 6.64%  B) 16.64%  C) 15.64%  D) 21%  E) 10.64%
Percentage error in calculated area   =(10+10+(10Ã—10)/100)%=21%   ANSWER:21%
<result>D</result>
An error 10% in excess is made while measuring the side of a square. Now What is the percentage of error in the calculated area of the square?