<Tr> <Td> 1 cubic inch (cu in) or (in) </Td> <Td> </Td> <Td> 6995163870640000000 ♠ 16.387 064 mL </Td> </Tr> <Tr> <Td> 1 cubic foot (cu ft) or (ft) </Td> <Td> 7003172800000000000 ♠ 1728 cu in </Td> <Td> 6998283168465920000 ♠ 28.316 846 592 L </Td> </Tr> <Tr> <Td> 1 cubic yard (cu yd) or (yd) </Td> <Td> 27 cu ft </Td> <Td> 6999764554857984000 ♠ 764.554 857 984 L 6999764554857984000 ♠ 0.764 554 857 984 m </Td> </Tr> <Tr> <Td> 1 acre - foot (acre ft) </Td> <Td> 7004435600000000000 ♠ 43 560 cu ft 7003161333300000000 ♠ 1613. 333 cu yd </Td> <Td> 7003123348183754752 ♠ 1.233 481 837 547 52 ML 7003123348200000000 ♠ 1233. 482 m </Td> </Tr>

Why does america use the english measurement system