A man, 65 kg, descends to the ground with the help of a parachute, 18 kg. The parachute is hemispherical in shape, 2m diameter. Density of air can be taken as 0.00125 g/cm³ and its kinematic viscosity as 0.15 stoke. What is the terminal velocity of the parachute? 
(Take C_D = 1.5 and g = 1000 cm/sec²)