3900
He describes 3900 different kinds in his book and gives credit to many other people for hundreds of them.
3900/10=390
There are 1000 metres in one kilometre. Therefore, 3900 metres is equal to 3900/1000 = 3.9 kilometres.
There are 100 centimetres in one metre. Therefore, 3900 centimetres is equal to 3900/100 = 39 metres.
There are 1.609344 kilometres in one mile. Therefore, 3900 miles is equal to 3900 x 1.609344 = 6276.4416 kilometres.
3900 m = 3.9 kmTo convert from m to km, divide by 1000.
3900 cubic centimeters = about 238 cubic inches.
3900
3900
3900 metres
3900 inches