How many kilometers are there in #6.2*10^7# cm?

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Answer 1 · 2016-09-06T18:57:57

#620 km#

#1 km = 1000 m and 1m = 100cm#

So, #1km= 100000cm = 1 xx10^5cm#

When you convert to a bigger unit, the number gets smaller.

#(6.2 xx10^7)/(1xx10^5) = 6.2 xx 10^2 = 620 km#

Or we can convert cm to metres first (#div100#)

Then convert metres to km (#div 1000#)

#(6.2 xx 10^7cm) div 100 = 6.2 xx 10^5 m#

#(6.2 xx 10^5 m) div 1000 = 6.2 xx10^2km#

#6.2 xx10^2km = 620 km#