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

1 Answer
Sep 6, 2016

620 km

Explanation:

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