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  2. Backboard (basketball) - Wikipedia

    en.wikipedia.org/wiki/Backboard_(basketball)

    The top of the hoop is 10 feet (3.05 m) above the ground. Regulation backboards are 6 feet (1.83 m) wide by 3.5 feet (1.07 m) tall. All basketball rims (hoops) are 18 inches (46 cm) in diameter. The inner rectangle on the backboard is 24 inches (61 cm) wide by 18 inches (46 cm) tall, and helps a shooter determine the proper aim and banking for ...

  3. Balance beam - Wikipedia

    en.wikipedia.org/wiki/Balance_beam

    Balance beam. The balance beam is a rectangular artistic gymnastics apparatus and an event performed using the apparatus. The apparatus and the event are sometimes simply called "beam". The English abbreviation for the event in gymnastics scoring is BB. The balance beam is performed competitively only by female gymnasts .

  4. Basketball court - Wikipedia

    en.wikipedia.org/wiki/Basketball_court

    Basketball court. The home court of the Miami Heat of the National Basketball Association. In basketball, the basketball court is the playing surface, consisting of a rectangular floor, with baskets at each end. Indoor basketball courts are almost always made of polished wood, usually maple, with 3.048 meters (10 ft)-high rims on each basket.

  5. American football field - Wikipedia

    en.wikipedia.org/wiki/American_football_field

    The total area of the field is 57,600 sq ft or 5,350 m 2. There is a goal centered on each end line, with a crossbar 10 feet (3.0 m) above the ground and goalposts 18 feet 6 inches (5.64 m) apart (in college and the NFL) extending at least 35 feet (11 m) above the crossbar. Between the goal lines, additional lines span the width of the field at ...

  6. Billiard table - Wikipedia

    en.wikipedia.org/wiki/Billiard_table

    Regulation 10 × 5-foot carom billiards tables have a playing surface (measured between the noses of the cushions) of 2.84 by 1.42 metres (9.3 by 4.7 ft) with a 5-millimetre allowance. [5] The standard height range of the table, measured from the playing surface to the ground is between 75 and 80 centimetres.

  7. Olympic-size swimming pool - Wikipedia

    en.wikipedia.org/wiki/Olympic-size_swimming_pool

    2 m (6 ft 7 in) minimum, 3 m (9 ft 10 in) recommended when using the pool for multi discipline. Number of lanes: 10 Lane width: 2.5 m (8 ft 2 in) Water temperature: 25–28 °C (77–82 °F) Light intensity: minimum 1500 lux (140 footcandles) Volume: 2,500,000 L (2,500 m 3; 88,000 cu ft), assuming a nominal depth of 2 m. About 2 acre-feet.

  8. Ice hockey rink - Wikipedia

    en.wikipedia.org/wiki/Ice_hockey_rink

    Each goal line is 11 feet (3.4 m) from the end boards. NHL blue lines are 75 feet (22.9 m) from the end boards and 50 feet (15.2 m) apart. [4] The 13.4-foot (4.09 m) difference in width from the international standard represents a significant difference in width-to-length ratio on the ice.

  9. Tennis court - Wikipedia

    en.wikipedia.org/wiki/Tennis_court

    Its width is 27 ft (8.23 m) for singles matches and 36 ft (10.97 m) for doubles matches. [2] The service line is 21 ft (6.40 m) from the net. [ 2 ] Additional clear space around the court is needed in order for players to reach overrun balls for a total of 60 ft (18 m) wide and 120 ft (37 m) long.