The optimal height h of the letters of a message printed on

Last updated: 7/4/2022

The optimal height h of the letters of a message printed on pavement is given by the formula h = 0.00252d2.27 . Here e d is the distance of the drive from the letters and e is the height of the driver's eye above the pavement. All of the distances are in meters. Find h if d = 50 m and e = 1.2 m. Round to the nearest meter. The optimal height for the given values is meters.