1mm
About 6,800 kilometers (4,200) miles long.
2900 km
Britain is 243,610 km²Amazon is 5.5 million km²Therefore, the Amazon is much bigger than Britain.
Amazon, Nile, Mississippi-Missouri, YangseNile, Africa (6,825 km)Amazon, South America (6,437 km)Chang Jiang (Yangtze), Asia (6,380 km)Mississippi, North America (5,971 km)
85 km wide and 50 m deep
About 1,740 miles.
Wel my research says that vocanoes can be about 400 km deep or even more.ABOUT 400 km only science people know.
Mississippi - 2,320 miles Nile - 4,135 miles Amazon - 3,980 miles
The Amazon Rainforest is roughly 5,500,000 km² or 2,123,562 sq mi.
40 metres deep.
Valles Marineris is about 4000 km long, 200 km wide, and 7 km deep.
34.37 km