While calculating the edge of a square, a worker makes an error of 2% in excess. What % error does he make in calculating area? (%)  Choices.
A) 4.09  B) 4.0  C) 4.04  D) 4.02  E) 4.01
Explanation:   Given Error = 2% while measuring the side of a square.   If the correct value of the side of square is 100, the measured value:   =&gt; 100 + 2% *100   = 100+2= 
<gadget id="calculator">100+2</gadget>
<output>102</output>
102   The area of square with edge 100= side*side   =&gt; 100*100= 
<gadget id="calculator">100*100</gadget>
<output>10_000</output>
&gt; 10000   The area of square with side 102= 102*102= 
<gadget id="calculator">102*102</gadget>
<output>10_404</output>
10404   Error in area calculation= 10404-1000 = 404   % error= (404/10000)*100= 
<gadget id="calculator">(404/10000)*100</gadget>
<output>101/25 = around 4.04</output>
4.04%   ANSWER: 4.04
<result>C</result>
While calculating the edge of a square, a worker makes an error of 2% in excess. What % error does he make in calculating area? (%)