<Li> <P> The backboard and basket </P> </Li> <P> The backboard and basket </P> <Table> <Tr> <Th_colspan="2"> Area </Th> <Th_colspan="2"> NBA </Th> <Th_colspan="2"> FIBA </Th> <Th_colspan="2"> WNBA </Th> <Th_colspan="2"> NCAA </Th> </Tr> <Tr> <Th> Imperial </Th> <Th> Metric </Th> <Th> Imperial </Th> <Th> Metric </Th> <Th> Imperial </Th> <Th> Metric </Th> <Th> Imperial </Th> <Th> Metric </Th> </Tr> <Tr> <Td_colspan="2"> Court length </Td> <Td> 94 ft </Td> <Td> 28.65 m </Td> <Td> 91.86 ft </Td> <Td> 28 m </Td> <Td_colspan="4"> Same as NBA </Td> </Tr> <Tr> <Td_colspan="2"> Court width </Td> <Td> 50 ft </Td> <Td> 15.24 m </Td> <Td> 49.21 ft </Td> <Td> 15 m </Td> <Td_colspan="4"> Same as NBA </Td> </Tr> <Tr> <Td_colspan="2"> Rim height </Td> <Td> 10 ft </Td> <Td> 3.05 m </Td> <Td_colspan="6"> Same as NBA </Td> </Tr> <Tr> <Td_colspan="2"> Restricted arc radius </Td> <Td> 4 ft </Td> <Td> 1.22 m </Td> <Td> 4.10 ft </Td> <Td> 1.25 m </Td> <Td_colspan="4"> Same as NBA </Td> </Tr> <Tr> <Td_colspan="2"> Center circle diameter </Td> <Td> 12 ft </Td> <Td> 3.66 m </Td> <Td> 11.81 ft </Td> <Td> 3.6 m </Td> <Td_colspan="4"> Same as NBA </Td> </Tr> <Tr> <Td_colspan="2"> 3 - point line distance from the basket </Td> <Td> 23.75 ft 22 ft in corner * </Td> <Td> 7.24 m 6.70 m in corner * </Td> <Td> 22.15 ft 21.65 ft in corner † </Td> <Td> 6.75 m 6.60 m in corner † </Td> <Td_colspan="2"> Same as FIBA </Td> <Td> 20.75 ft </Td> <Td> 6.32 m </Td> </Tr> <Tr> <Td_colspan="2"> Key (shaded lane or restricted area) width </Td> <Td> 16 ft </Td> <Td> 4.88 m </Td> <Td> 16.08 ft </Td> <Td> 4.9 m </Td> <Td_colspan="2"> Same as NBA </Td> <Td> 12 ft </Td> <Td> 3.66 m </Td> </Tr> <Tr> <Td_colspan="2"> Free - throw line distance from point on the floor directly below the backboard </Td> <Td> 15 ft </Td> <Td> 4.57 m </Td> <Td> 15.09 ft </Td> <Td> 4.6 m </Td> <Td_colspan="4"> Same as NBA </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Area </Th> <Th_colspan="2"> NBA </Th> <Th_colspan="2"> FIBA </Th> <Th_colspan="2"> WNBA </Th> <Th_colspan="2"> NCAA </Th> </Tr>

What is the length of an nba 3 point line
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