You are designing a parachute for a person who's mass is 85 kg. This person is going to fall through the air and air

temperature and pressure are -10° C and 95 kPa respectively. if the parachute itself has a mass of 1.5 kg and terminal

velocity of the person is 6 m/s, calculate the required diameter of the parachute. Consider, drag coefficient as 1.4.

[HINTS: Use the ideal gas law to find air density. Specific gas constant for dry air, R=287.053 J/kgk]