What is the height of a backboard? The top of the hoop is 10 feet (305 cm) above the ground. Regulation backboards are 72 inches (183 cm) wide by 42 inches (110 cm) tall. All basketball rims (hoops) are 18 inches (46 cm) in diameter.
Can a 5 4 person dunk?
According to this calculator, a 5′ 4″ guy with average arm length needs to jump 41″ in order to dunk.