The reflection coefficient hits 100% exactly at the critical angle. More rigorously, consider that an analysis of the boundary conditions at the interface requires that the two polarizations of light have reflectances:
Distance from Ruskin, FL to Palmetto, FL 18 Miles or 29 Km. How many hours? 24 mins
Driving distance from Boca Raton, FL to Key West, FL. The total driving distance from Boca Raton, FL to Key West, FL is 209 miles or 336 kilometers. Your trip begins in Boca Raton, Florida. It ends in Key West, Florida.