13 2. A computer monitor is rectangular in shape. To the nearest inch, the length of the monitor is 15 inches and its width to the nearest inch is 13 inches. What would the best value of the perimeter be (include the absolute error or tolerance)? What is the least possible value of the perimeter of the computer monitor to the nearest ten? Best value 3. If measurement A = (12.6 0.4) m/s, measurement B = (4.8 0.3) m/s, and measurement C = (10.350.08) m/s, what is a. A+B? b. B-A? c. A+B-C?