A person has 400 million alveoli per lung with an average radius of 0.1 mm for each alveolus.Considering the alveoli are spherical in shape,total respiratory surface of that person is closest to
a. 500 mm2 b. 200 mm2 c.100 mm2 d. 1000 mm2
The options are given wrong
the answer is 100.531~=100 m^2
calculation
4 × pi × 0.1^2 × 400 × 2 × 10^6 mm^2
= 100.531 m^2
the answer is 100.531~=100 m^2
calculation
4 × pi × 0.1^2 × 400 × 2 × 10^6 mm^2
= 100.531 m^2