<Tr> <Td> Obese Class III (Very severely obese) </Td> <Td> 40 </Td> <Td> 45 </Td> <Td> 1.6 </Td> <Td> 1.8 </Td> </Tr> <Tr> <Td> Obese Class IV (Morbidly Obese) </Td> <Td> 45 </Td> <Td> 50 </Td> <Td> 1.8 </Td> <Td> </Td> </Tr> <Tr> <Td> Obese Class V (Super Obese) </Td> <Td> 50 </Td> <Td> 60 </Td> <Td> </Td> <Td> 2.4 </Td> </Tr> <Tr> <Td> Obese Class VI (Hyper Obese) </Td> <Td> 60 </Td> <Td> </Td> <Td> 2.4 </Td> <Td> </Td> </Tr>

What is bmi state the formula in getting it