An average human body modeled as 30 cm diameter , 170 cm long cylinder has 72 % water by mass so that its properties may

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An average human body modeled as 30 cm diameter , 170 cm
long cylinder has 72 % water by mass so that its properties may be
taken as those of water at room temperature : p = 1000 kg / m³.c =
4180 J / kg Kand k = 0.608 W / m K.A person is found dead at 5 am
in a room the temperature of which is 20 ° C.The temperature of the
body is measured to be 25 ° C when found , and the heat transfer
coefficient is estimated to be 8 W / m²K Assuming the body
temperature of a living man is 37 ° C , estimate the time of death
of the above person .
Need ASAP please