How many tiles are needed for a complete basketball court?!

Here are the official sizes for the different levels of basketball courts. High school basketball courts are 84' x 50'. College and NBA basketball courts are 94' x 50'. The keys for all are the same, 12' wide by 18'10" long. The number of tiles needed for each area is as follows: 4200 total tiles for a high school court. 4700 total tiles for a college or NBA court. The number of tiles needed for the key area is 228 for a 12' x 19' area.