Answer:- 12 km = 12000 m
Solution:- It's a metric unit conversion where we are asked to convert 12 km to m where km stands for kilometer and m stands for meter.
In metric conversions, kilo means 1000.
So, 1 km = 1000 m
It means, we multiply the given km by 1000 to get the answer in m as:
![12km((1000m)/(1km))](https://img.qammunity.org/2019/formulas/chemistry/middle-school/t247f6nx9j1rvzz4zd6kkzs36lzxpebep0.png)
= 12000 m
Hence, 12 km = 12000 m.