Answer:
The diameter of red blood cell [tex]8\times 10^{-4}cm[/tex]
Explanation:
1 in = 2.54 cm
So, [tex]3\times 10^{-4}in = (3\times 10^{-4})\times 2.54 cm[/tex]
= [tex]8\times 10^{-4}cm[/tex]
Hence the diameter of red blood cell [tex]8\times 10^{-4}cm[/tex]