When measuring the length of a square's side, an error of 2% is created. The percentage of error in the square's calculated area is:
A. 2%
B. 2.02%
C. 4%
D. 4.04%
Answer:D
When measuring the length of a square's side, an error of 2% is created. The percentage of error in the square's calculated area is:
A. 2% B. 2.02% C. 4% D. 4.04%
Explanation: 100 centimetres is read as 102 centimetres.A1 is equal to (100 x 100) cm2 and A2 is equal to (102 x 102) cm2.[(102)2 - (100)2] = (A2 - A1).(102 + 100) x (102 - 100) 404 cm2 =The percentage error is calculated as 404/100 x 100 x 100 percent = 4.04 percent.