An error 2%in excess is made while measuring the side of a square. What is the percentage of error in the calculated area of the square? Pick
A) 4.04 %	B) 2.02 %	C) 4 %	D) 2 %	E) 2.40 %
Explanation:   Error =2% while measuring the side of a square.   Let correct value of the side of the square =100   Then, measured value =100+2= 
<gadget id="calculator">100+2</gadget>
<output>102</output>
102 (∵ 2 is 2%of 100)   Correct area of the square=100×100=10000   Calculated area of the square =102×102=10404   Error =10404−10000=404   Percentage error =error /actual value×100   =404/10000×100=4.04%   4.04 %nswer: Option 4.04 %
<result>A</result>
An error 2%in excess is made while measuring the side of a square. What is the percentage of error in the calculated area of the square?