A rectangular plate has length (2±0.02) cm and width (1±0.01) cm. The maximum percentage error in the measurement of its area is:
Correct answer: B. 2%
- A. 1%
- B. 2%
- C. 3%
- D. 5%
Explanation
The following is the solution: % uncertainty of length= 0.02/2 x 100= 1% % uncertainty of width=0.01/1 x 100= 1% % uncertainty of the area of rectangle=1+1 =2%
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