The semi-circle is also known as the restricted zone. The circle signifies the line where players can and cannot pick up a charge. If someone is trying to pick up a charge and is standing inside the semi-circle (or closer to the basket), then they are inside the restricted zone and will not pick up a charge, but rather a foul, having the other player involved shooting free throws. If the person is outside the restricted zone, then the person gets the charge and the other player picks up the foul.
Around the 2002-2003 season.
78 feet from baseline to baseline.
94 feet baseline to baseline
The baseline is 27 feet wide. To walk from the baseline to the net, it's 39 feet. That means from baseline to baseline, it is 78 feet.
An NBA size basketball court is 94 feet from baseline to baseline and 50 feet from sideline to sideline.
An NBA size Basketball court is 94 feet from baseline to baseline and 50 feet from sideline to sideline.
A tennis court from baseline to net is 39 feet, so 39+39 = 78 and 78/3 equals 26 yards.
From the baseline to the net, a tennis court is about 21 feet. This gives the person plenty of space to jump around in.
The length for a standard tennis court is 78 feet long, meaning there is 39 feet from the net to a baseline.
During your service motion, if your feet touch the baseline of the court or touch the middle line (the bump in the middle of the baseline), it is called a foot fault and the serve is a fault. The serve is supposed to be delivered from behind the baseline and from one side of the court. Your feet are only allowed to touch the baseline after the ball has completed contact with the racket head.
The court is 78 feet from baseline to baseline (about 23.77 meters). The overall size of a tennis doubles court is 36 feet wide by 78 feet long. The singles court is slightly narrower measuring 27 feet wide. Both singles and doubles courts share the same length. The service court fits inside the singles width of the court (27 feet wide) and extends back from the net 21 feet. The service court is divided in half with a center line marking the left and right service courts. There is a 12 foot perimeter on each side (sidelines) and 21 feet back from each baseline.