High School= 21 feet, NCAA= 22 feet and the NBA= 25 feet.
In High School basket ball the backboard is 15 feet from the back of the free throw line and the 3 point line is an additional 6 feet from the three throw line. So the answer is 15 feet plus 6 feet for a total of 21 feet. The High School 3 point Arc radiates 19 feet 9 inches from the center of the goal to just behind the arc.
In the NCAA you add 1 foot to the above answer for a total of 22 feet, and for the NBA you add an additional 3 feet the NCAA total for a grand total of 25 feet to the back board.
23 Feet, 9 Inches
Answer 15 feet. The center of the goal is 13 feet 9 inches from the back of the free throw line. From the center of the goal to the backboard it is 1 foot 3 inches. 13' 9" + 1' 3" = 15 ' Typical placement of the backboard is to have its back 15 feet from the back of the free throw line, and inside the base line by 4 feet. This is why the arc falls off at 5 feet 3 inches ( 63") from the base line. ( The beginning of the corners )
20 ft.
23 FEET
15 feet
The three-point line in college is 20.75 feet. This is measured from the centre of the basket.
20ft 9in
24 feet from the corner
22 ft, 1.7 in
20.9 feet
20 feet 9 inches.
20 ft 6 in from the basket.