Question

What is 7.8×105 m/h in kilometers per day?

3.240×1010 km/day

3.240×108 ​ km/day ​

1.872×106 ​ km/day ​

1.872×104 km/day ​

Answer 1

Start with the given , and to convert units you can multiply by ratios of 1, notice the units cancel to leave km/day

\[\large \frac{ 7.8*10^5~~m }{ 1~~hr } * \frac{ 1~~km }{ 10^{3}~~m }*\frac{ 24~~hr }{
1~~day } = ...\]

Answer 2

Yeah but how i do this

Answer 3

Multiply the fractions
\[\large = \frac{ 7.8*10^5*24 }{ 10^3 }~~\frac{ km }{ day }\]

Answer 4

18720000 for the top 1?

Answer 5

is it C? @DanJS