since the measurement of a television set is corner to corner of the screen (not counting the bezel) your 49" will likely be approximatively 2-4" wider with bezel and 1-3" taller
Go to the manufacturer's page, check the physical dimensions for the specific model you are interested in and compare. There is no reason to ask that question here, especially more so without naming the exact models involved.
since the measurement of a television set is corner to corner of the screen (not counting the bezel) your 49" will likely be approximatively 2-4" wider with bezel and 1-3" taller