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 answer: A) 4.16 B) 5.16 C) 7.16 D) 8.16 E) 9.16
Explanation:   100 cm is read as 104 cm.   A1 =(100 × 100)cm2 = 10000   and A2= (104 × 104)cm2= 10816   (A2 - A1) = 10816-10000= 
<gadget id="calculator">10816-10000</gadget>
<output>816</output>
816=&gt; 816/10000*100= 
<gadget id="calculator">816/10000*100</gadget>
<output>204/25 = around 8.16</output>
8.16   Answer : 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: