What is the approximate length of the Great Wall of China?

a) 3000 Miles

b) 5500 Miles

c) 7000 Miles

d) 4650 Miles

The Ming Great Wall ( Which was constructed from 1368-1644) measure 8851.8 kilometers (5500 Miles) but this is only the main part. On the whole, total length of the Great Wall of China is 21196.18 Kilometers (13170 Miles) as per National Cultural Heritage Administration (NCHA) of China.