Question

Fill in the blank
$1km$$ = .......cm$

Answer 1

Hint: In order to solve problems of this type it’s important to first convert kilometres into metres and then the obtained value should be converted further into centimeters. To convert kilometers into meters, multiply the number of kilometers by $1000$ and further to convert meters into centimeters, multiply the number of meters by $100$.

Complete step-by-step answer:
It is asked to convert $1$ kilometer into centimeters. So firstly we will convert the kilometre unit into meter units by multiplying the number of kilometers by $1000$.
According to given data, we have
$1km$ $ = $$1km$$ \times \dfrac{{1000m}}{{1km}}$ $ = 1000m$
Further, we will convert the obtained meter unit into a centimeter unit by multiplying the number of meters by $100$.
Therefore,
$ \Rightarrow 1000m = 1000m \times \dfrac{{100cm}}{{1m}} = 100000cm$
$ \Rightarrow {10^5}cm$
Hence, we get that 1 kilometer unit is equal to ${10^5}$centimetre units.

Additional Information:
A kilometre (km) is a decimal multiple of meter, the International System of Units (SI) unit of length. A kilometre unit is now officially used to express distance between geographical places.

Note: While solving problems of this type and avoiding mistakes it’s important to first convert kilometres into metres by multiplying the number of kilometers by $1000$ and then the obtained value in meters should be converted further into centimeters by multiplying the number of meters by $100$.