1) Let's tackle this question with the following procedure for each conversion:
Metric Conversions:
350 km
Or Simply:
[tex]350\operatorname{km}=350\times1000=350,000m[/tex]b) 2 miles
Considering that 1 mile is equivalent to 1609 meters then we can write:
[tex]2miles=2\times1609=3218m[/tex]c) 240"
One inch is 2.54 centimeters. 1 centimeter is 1/100 meters so we can write out the following:
[tex]\begin{gathered} 1^{\doubleprime}=2.54\operatorname{cm}=\frac{1}{100}\times2.54=0.0254m \\ 0.0254m------1\~ \\ x---------\text{ 240} \\ x=240\cdot0.0254 \\ x=6.096m \end{gathered}[/tex]Note that all conversions are proportional. And those are the answers.