National Evaluation Series (NES) Business Studies Practice Test

To determine the correct size of the flat screen TV based on its diagonal measurement, we can use the Pythagorean theorem. The diagonal \( d \) of a rectangle can be calculated using the formula: \[ d = \sqrt{(width)^2 + (height)^2} \] In this case, the width of the screen is 49 inches and the height is 25 inches. Plugging in these values, we calculate: \[ d = \sqrt{(49)^2 + (25)^2} \] \[ d = \sqrt{2401 + 625} \] \[ d = \sqrt{3026} \] \[ d \approx 55.0 \text{ inches} \] When rounded, this diagonal measurement comes out to approximately 55 inches. Therefore, the rounded size of the TV, as per the industry standard for measuring screen size, is indeed 55 inches. This is why this particular response is correct for the question regarding the size of the flat screen TV based on its diagonal measurement.